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National Benzole

National Benzole was a British petroleum brand that evolved from benzole fuel into a major UK petrol retail identity before being phased out by BP in the early 1990s.

Last updated October 14, 2026

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Overview

National Benzole was a United Kingdom petroleum and motor-fuel brand established in London in February 1919. Its creation followed the large-scale expansion of benzole production during the First World War, when benzole was produced in significant quantities for military use and a substantial post-war surplus became available. Samuel Henshaw, chairman of the Staffordshire Chemical Company, and other associates identified an opportunity to standardize and commercialize the material as a motor fuel. The new company sought to overcome concerns about inconsistent quality, supply reliability, engine compatibility, and the practical inconvenience of using neat benzole in vehicles previously configured for petrol. The business initially operated with a small network of storage depots and a fleet of second-hand wartime lorries. Fuel was distributed in surplus military drums and cans, and the company gradually built a national presence. A significant early endorsement came in 1920, when a Rolls-Royce 40/50 hp completed a 10,000-mile reliability trial using National Benzole and received the RAC Dewar Trophy. Supply difficulties, including the effects of a coal strike and shortages of coal-derived feedstock, encouraged the company to develop a fifty-fifty mixture of benzole and petroleum in 1922. Neat benzole continued to be promoted as an anti-knock additive, while the blended product was better suited to ordinary motorists and reduced dependence on a single source of supply. National Benzole benefited from the rapid spread of motoring and the emergence of commercial roadside garages in Britain after the First World War. The Automobile Association operated a small number of early filling stations that initially supplied National Benzole, helping associate the brand with domestic production and motoring patriotism. During the 1920s and 1930s, the company became increasingly sophisticated in its distribution and marketing. Its head office moved to Grosvenor Gardens in London, and a dedicated sales force used yellow Morris Cowleys. The brand's most recognizable image was Mr. Mercury, a winged figure presented in black and chrome-gold company colors and later used as a logo. The company lacked its own oil-refining capacity and therefore obtained petroleum through commercial arrangements, including tanker purchases and a long-term contract with the Anglo-Persian Oil Company. These relationships anticipated its later integration into the Shell-Mex & BP structure. During the Second World War, National Benzole's separate fuel branding disappeared as petrol brands were replaced by standardized pool petrol. Mr. Mercury returned to advertising in 1953, and the brand re-established itself in the post-war market. By the late 1950s, however, benzole's role in motor fuel was changing. The chemical became more valuable for specialist industrial applications, while concerns about its health effects and the availability of other anti-knock additives reduced its importance in automotive fuel. In 1957, National Benzole became wholly owned by Shell-Mex & BP through British Petroleum but retained a separate trading identity. In 1959, benzole-related chemical activities were separated into Benzole Producers Limited, while the motor-fuel business was integrated more closely with Shell-Mex & BP. From the early 1960s, the retail fuel was sold simply as National petrol rather than as a benzole-containing product. Following the 1976 separation of Shell-Mex & BP, BP continued to operate and market the National brand in the United Kingdom. The brand remained visible at filling stations through the 1970s and 1980s, including promotions involving Smurfs figurines whose colors complemented the National identity. BP increasingly concentrated its investment and consumer recognition around the BP name, however, and National declined as a standalone retail identity. By the early 1990s, National stations had generally been rebranded as BP. Scottish Fuels briefly revived the National name at some outlets from 2000, but those sites were subsequently converted to Scottish Fuels branding. National Benzole is therefore best understood as a defunct British fuel brand whose historical significance lies in the commercialization of benzole, the development of early roadside fuel distribution, and the transition from independent petroleum identities to national brands controlled by major oil companies.

History

National Benzole was founded in February 1919 in a room beside the boiler house of the Gas Light and Coke Company on Horseferry Road in London. Its founders were responding to an unusual post-war market condition. Benzole production had expanded greatly during the First World War because the material could serve military and automotive purposes. When wartime demand receded, large stocks remained available. Samuel Henshaw, chairman of the Staffordshire Chemical Company, and his associates believed that these stocks could be converted into a commercial motor-fuel business. The main challenge was not simply finding customers. Neat benzole required different carburetor settings from petrol, its quality and specification could vary, and its solvent properties raised questions about vehicle components such as varnished-cork carburetor floats. National Benzole therefore focused on consistency and distribution. It established storage depots around the country and used a small fleet of war-surplus lorries with solid tires to move fuel in drums and cans of varying capacities. The brand gained valuable publicity in 1920 when a Rolls-Royce 40/50 hp completed a 10,000-mile reliability trial using National Benzole and received the RAC Dewar Trophy. At the same time, the company encountered shortages caused by a coal strike and limitations in the supply of coal-derived benzole. Since some motorists considered neat benzole too strong for normal engines, National Benzole introduced a fifty-fifty mixture of benzole and petroleum in 1922. Neat benzole remained available as an anti-knock additive, but the blend offered a more practical mainstream product and reduced dependence on benzole alone. The expansion of motoring after the First World War helped the company become a national brand. The Automobile Association established twelve early filling stations for its members, initially supplying National Benzole. Although the AA later dismantled this small chain as commercial service stations became more common, the arrangement helped familiarize motorists with the brand. National Benzole also benefited from the gradual transformation of fuel retailing from a trade handled by pharmacies, cycle shops, and blacksmiths into a dedicated roadside garage industry. In the 1920s and 1930s, the company professionalized its public image. Its headquarters moved to Grosvenor Gardens, an upmarket London location, and it created a formal sales force using yellow Morris Cowley cars. The brand's most memorable advertising device was Mr. Mercury, a winged figure shown in black and chrome-gold colors. His image appeared at filling stations and eventually became a logo. National Benzole had no refining capacity of its own, so it secured petroleum through external supply arrangements, including high-seas purchases, tanker operations, and a long-term contract with the Anglo-Persian Oil Company. These commercial links helped prepare the way for later ownership ties with British Petroleum. The Second World War interrupted normal fuel branding. National Benzole, like other branded petrol products, gave way to pool petrol. After the war, Mr. Mercury returned in 1953 and the company re-established its retail presence. The underlying economics of benzole, however, were changing. The chemical acquired more valuable specialist industrial uses as the British chemical sector developed. Health concerns also emerged during the late 1950s, while improvements in petroleum refining and anti-knock additives made benzole less essential for engine performance. In 1957, National Benzole became wholly owned by Shell-Mex & BP through British Petroleum, although it initially retained a separate trading identity. In 1959, the specialist benzole business was placed in Benzole Producers Limited, while the motor-fuel marketing operation was merged more fully into Shell-Mex & BP. From the early 1960s, National sold petrol rather than fuel identified as benzole. The visual identity was also modernized: the earlier black-and-chrome-gold presentation gave way to yellow, blue, and white. After the 1976 separation of Shell-Mex & BP, BP continued to operate National as a separate retail identity. The brand remained common on British roads during the 1970s and 1980s, and promotions included Smurfs figurines whose colors fitted the National scheme. BP increasingly prioritized its own global identity, however. National consequently declined and was phased out at most stations in favor of BP by the early 1990s. Scottish Fuels used the National name at some outlets from 2000, but those locations were later rebranded. The brand's history illustrates the development of British fuel retailing, the commercialization of coal-derived motor fuel, and the eventual consolidation of independent petroleum brands into large oil-company networks.

  • 2000

    Limited Scottish Fuels revival

    [1]

    Scottish Fuels temporarily applied the National name to some outlets before later rebranding them.

  • 1990

    National branding phased out

    [1]

    BP progressively replaced National station branding with BP branding during the late 1980s and early 1990s.

  • 1976

    National continues under BP after de-merger

    [1]

    BP retained and marketed the National identity after Shell-Mex & BP separated.

  • 1960

    Brand transitions to petrol marketing

    [1]

    The retail business stopped selling benzole as part of the named fuel and operated as National petrol.

  • 1959

    Benzole chemical activities separated

    [1]

    Benzole Producers Limited was created for the specialist chemical market and the motor-fuel business was integrated with Shell-Mex & BP.

  • 1957

    Acquired by Shell-Mex & BP

    [1]

    National Benzole became wholly owned by Shell-Mex & BP through British Petroleum while preserving a separate market identity.

  • 1953

    Mr. Mercury returns to advertising

    [1]

    The brand revived its distinctive winged advertising figure after the wartime period of standardized pool petrol.

  • 1927

    AA filling-station network becomes unnecessary

    [1]

    The Automobile Association dismantled its small chain of member-only stations as commercial roadside fuel outlets expanded.

  • 1922

    Fifty-fifty benzole and petroleum blend introduced

    [1]

    The blend addressed supply limitations and made the fuel more suitable for ordinary motorists.

  • 1920

    RAC Dewar Trophy endorsement

    [1]

    A Rolls-Royce completed a 10,000-mile trial using National Benzole, giving the young brand high-profile reliability publicity.

Products and positioning

Originally positioned as a dependable, domestically sourced and technically consistent alternative or supplement to petrol, National Benzole later became a mainstream British petrol retail brand. Its marketing emphasized motoring performance, supply reliability, national distribution, and recognizable roadside presentation.

  • Benzole motor fuel · 1919

    National Benzole

    The original branded product was benzole marketed for automotive use. National Benzole promoted standardized quality and domestic availability at a time when motorists faced inconsistent fuel specifications and limited roadside supply. Neat benzole remained available for performance and anti-knock purposes, although it required vehicle adjustments and was not ideal for every engine.

  • Benzole and petroleum blend · 1922

    National fifty-fifty mixture

    Introduced in 1922, the fifty-fifty mixture combined benzole with petroleum. It was developed in response to supply constraints and concerns that neat benzole was too strong for average engines. The blend became a practical bridge between the company's original benzole proposition and mainstream petroleum retailing.

  • Petrol · 1960

    National petrol

    From the early 1960s, the retail business sold petrol under the shortened National name as benzole was removed from the motor-fuel proposition. The product represented the brand's transition from a specialist coal-derived fuel identity to a conventional petroleum filling-station business.

Marketing campaigns

  • 1970Smurfs promotional figurines

    United Kingdom

    National filling stations promoted and sold figurines of the Smurfs, whose blue and white appearance complemented the brand's retail colors.

    Outcome. The promotion reinforced National's family-oriented roadside retail presence during the 1970s and 1980s.

  • 1953Post-war Mr. Mercury revival

    United Kingdom

    Mr. Mercury returned to advertising after wartime pool petrol temporarily suppressed individual fuel brands.

    Outcome. The campaign supported National Benzole's re-establishment as a recognizable post-war roadside brand.

  • 1930Mr. Mercury brand campaign

    United Kingdom

    The company used Mr. Mercury, a winged figure in black and chrome-gold styling, as a prominent advertising and roadside identity.

    Outcome. Mr. Mercury became one of the brand's strongest recognition assets and was eventually used as its logo.

  • 1920RAC Dewar Trophy reliability promotion

    United Kingdom

    National Benzole benefited from the public achievement of a Rolls-Royce completing a 10,000-mile reliability trial on the brand's fuel.

    Outcome. The recognition helped establish credibility for a new fuel brand and supported National Benzole's national expansion.

Brand decisions

  • 1990

    Phase out National in favor of BPStrategy

    Background

    National's standalone identity had weakened during the 1980s while BP focused marketing and investment on its corporate brand.

    Action taken

    BP progressively rebranded National filling stations as BP locations.

    Aftermath

    National ceased to be a mainstream UK filling-station brand, although the name briefly reappeared under Scottish Fuels from 2000.

  • 1976

    Retain National after the Shell-Mex & BP de-mergerStrategy

    Background

    The separation of Shell-Mex & BP changed the corporate structure behind the brand.

    Action taken

    BP continued to market National as a distinct retail identity for more than a decade.

    Aftermath

    National remained visible in the British filling-station market even as BP developed its own stronger corporate brand.

  • 1960

    Remove benzole from the retail fuel propositionGeneration change

    Background

    Benzole's health profile and declining technical necessity reduced the case for continuing it as a primary automotive fuel ingredient.

    Action taken

    National stations shifted to selling petrol under the shortened National name.

    Aftermath

    The brand survived as a retail identity but no longer directly represented benzole fuel.

  • 1959

    Separate specialist benzole production from motor-fuel marketingStrategy

    Background

    Benzole was becoming more valuable as an industrial chemical, while its automotive role was declining because of health concerns and alternative anti-knock additives.

    Action taken

    The specialist chemical business was assigned to Benzole Producers Limited and the motor-fuel operation was merged more fully with Shell-Mex & BP.

    Aftermath

    National moved toward conventional petrol retailing and away from its original benzole-centered proposition.

  • 1957

    Join the Shell-Mex & BP groupM&A

    Background

    National Benzole needed stronger integration with major petroleum suppliers as the fuel market matured.

    Action taken

    Shell-Mex & BP acquired full ownership through British Petroleum while allowing National Benzole to retain separate trading status.

    Aftermath

    The ownership change connected National to a much larger petroleum distribution system and preceded deeper integration of its motor-fuel operations.

  • 1922

    Introduce a fifty-fifty benzole and petroleum blendProduct launch

    Background

    Coal strikes and shortages affected benzole availability, while neat benzole was not ideal for every engine.

    Action taken

    National Benzole launched a product combining equal proportions of benzole and petroleum, while continuing to market neat benzole as an anti-knock additive.

    Aftermath

    The blend broadened the brand's practical appeal and reduced its reliance on neat benzole.

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