Lattice Group plc was a leading British gas transmission business.

It was listed on the London Stock Exchange and was a constituent of the FTSE 100 Index.

The Company was established in 2000 when BG Group demerged its UK gas transmission business, formerly known as Transco, and named it Lattice Group.

[2] In July 2005 National Grid Transco was renamed National Grid plc to provide 'a unifying identity across its operations'.

[3] As well as the UK gas transmission network, Lattice Group owned a telecoms business known as 186k.