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Lattice Group

Lattice Group was a British gas-transmission company created through the demerger of BG Group's UK transmission business and later merged into National Grid.

Last updated August 26, 2026

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Overview

Lattice Group plc was a British infrastructure company focused primarily on the transmission of natural gas in the United Kingdom. It was established in 2000 when BG Group separated its UK gas-transmission operations from the rest of the business. The separated operation had previously been known as Transco, and the new company adopted the Lattice Group name as an independent listed corporate identity. The company's principal asset and operating responsibility was the UK gas-transmission network. This infrastructure formed a critical link between gas importation, storage and production facilities and regional distribution networks and large industrial or commercial users. Lattice therefore operated in a regulated, capital-intensive utility sector rather than as a consumer-facing brand. Its business was associated with the physical movement of gas across Britain and with the management of the transmission infrastructure required to support national energy supply. In addition to its gas-transmission activities, Lattice Group owned a telecommunications business called 186k. The available reference material identifies 186k as a separate business within the group, but does not provide enough information to establish its product range, scale, customers or subsequent history. Lattice Group remained a public company for a relatively short period. In October 2002 it merged with National Grid plc, creating National Grid Transco. The transaction ended Lattice Group's existence as an independent corporate entity and brought its gas-transmission operations into the combined National Grid business. In July 2005, National Grid Transco was renamed National Grid plc. The stated purpose of the renaming was to provide a unifying identity across the group's operations. Accordingly, Lattice Group is best understood as a historical corporate and infrastructure brand rather than an active standalone company.

History

Lattice Group was formed in 2000 through the demerger of BG Group's UK gas-transmission business. Before the demerger, the operation was known as Transco. The transaction created a separately listed company whose principal responsibility was the operation of the United Kingdom's gas-transmission network. The gas-transmission business placed Lattice in the regulated infrastructure and energy-utility sector. Its role was to operate the high-pressure network used to transport gas across Britain, linking sources of supply with distribution systems and major users. The business was strategically important because gas transmission is a core part of national energy infrastructure, although the reference material does not provide detailed information about the company's regulatory arrangements, network length, financial performance or customer base. Lattice also owned a telecommunications business known as 186k. The available account of the company does not describe the telecommunications operation in detail, and its exact services, market position and later corporate treatment are therefore not established here. Lattice Group was listed on the London Stock Exchange and was included in the FTSE 100 Index. Its independent existence was brief. In October 2002, Lattice merged with National Grid plc. The combined company was named National Grid Transco, placing Lattice's gas-transmission activities within the enlarged National Grid group. This merger effectively replaced Lattice Group as the relevant corporate identity for the network business. In July 2005, National Grid Transco changed its name to National Grid plc. The company described the change as an attempt to create a unifying identity across its operations. The sequence from Transco to Lattice Group, then to National Grid Transco and finally National Grid, reflects a series of corporate separations, combinations and brand consolidations in the British energy-infrastructure sector. Lattice Group is consequently a defunct historical company whose principal legacy lies in the gas-transmission assets and operations absorbed into National Grid.

  • 2005

    National Grid Transco adopts a unified name

    [1]

    National Grid Transco was renamed National Grid plc in July to provide a common identity across the group's operations.

  • 2002

    Merger with National Grid

    [1]

    Lattice Group merged with National Grid plc in October, creating National Grid Transco.

  • 2000

    Lattice Group is established

    [1]

    BG Group demerged its UK gas-transmission business, formerly known as Transco, and established Lattice Group as a separate listed company.

  • 2000

    Lattice becomes a FTSE 100 company

    [1]

    Lattice Group was listed on the London Stock Exchange and became a constituent of the FTSE 100 Index.

Products and positioning

A listed British infrastructure operator centered on regulated gas transmission, with an additional telecommunications business.

  • Energy infrastructure · 2000

    UK gas-transmission network

    Lattice Group's principal business was the operation of the United Kingdom's gas-transmission network. The network transported gas across Britain and connected supply sources with downstream distribution systems and significant users. It was an infrastructure and utility operation rather than a packaged consumer product, and it became part of the National Grid business after the 2002 merger.

  • Telecommunications

    186k

    186k was a telecommunications business owned by Lattice Group. The available reference material identifies the business but does not describe its specific services, customer segments, geographic reach or operating results. Its presence shows that Lattice's holdings extended beyond gas transmission during its independent corporate period.

Brand decisions

  • 2005

    Adopt the National Grid corporate identityStrategy

    Background

    National Grid Transco sought a common identity for its operations.

    Action taken

    The company changed its name to National Grid plc in July 2005.

    Aftermath

    The National Grid name replaced the Lattice and National Grid Transco identities at group level.

  • 2002

    Merge with National GridM&A

    Background

    Lattice Group and National Grid combined their businesses in October 2002.

    Action taken

    The companies merged to form National Grid Transco.

    Aftermath

    Lattice Group ceased to exist as an independent company, while its gas-transmission operations continued within the National Grid group.

  • 2000

    Separate the UK gas-transmission business from BG GroupStrategy

    Background

    BG Group separated its UK gas-transmission operation, previously known as Transco, into a new listed company.

    Action taken

    The demerged business adopted the Lattice Group name and operated as an independent corporate entity.

    Aftermath

    Lattice became a standalone gas-transmission company and a constituent of the FTSE 100 Index.

Recent events

  • 2005

    National Grid Transco adopts the National Grid name[1]

    Other

    In July 2005, National Grid Transco was renamed National Grid plc as part of an effort to use one identity across its operations.

  • 2002

    Lattice Group merges with National Grid[1]

    M&A

    Lattice Group merged with National Grid plc in October 2002, forming National Grid Transco and ending Lattice's independent corporate existence.

Sources1 sources

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