- E.M.G Gas
- 01476 404003 - 161 Bridge End Road, Grantham, Lincolnshire, NG31 7HA
- Gas Appliance Showroom, The
- 01476 577566 - The Flat, 9a Bridge End Road, Grantham, Lincolnshire, NG31 6JW
- Lincolnshire Caravans
- 01754 762101 - North Shore Holiday Cntr, Roman Bank, Skegness, Lincolnshire, PE25 1HS
- Plumbgas
- 01476 577570 - The Brambles Laburnam Clo, Grantham, NG31 9LS
- C F Smith G M Ltd
- 01476 563380 - 23 Wharf Road, Grantham, Lincolnshire, NG31 6BG
- Wallmots
- 01476 594451 - Council Depot Alexandra Rd, Grantham, Lincolnshire, NG31 7AW
- Atkinson Gas Services
- 01507 600405 - Newlands Reston Rd, Legbourne, Louth, Lincolnshire, LN11 8LS
- K.P Cragg
- 01652 649555 - 2 Sylvester Street, Kirton Lindsey, Gainsborough, Lincolnshire, DN21 4NG
- East Coast Gas Services
- 01472 505050 - 287-291 Cleethorpe Road, Grimsby, South Humberside, DN31 3BH
- East Coast Gas Services
- 01472 353109 - Grimsby, South Humberside, DN31 3BH
- Gasafe Servicing
- 01522 523051 - 197 Yarborough Road, Lincoln, Lincolnshire, LN1 3NQ
- H.c.g Heating Construction
- 01522 680197 - Freeman Road, Lincoln, Lincolnshire, LN6 9AP
- Brian King
- 01472 879309 - 17 Grantham Avenue, Grimsby, South Humberside, DN33 2HE
- Millennium Gas Services
- 01507 603096 - 44 Keddington Road, Louth, Lincolnshire, LN11 0AU
- Mr Therm Ltd
- 01724 271313 - 17 Dunstall Street, Scunthorpe, South Humberside, DN15 6LD
- K Ogden
- 01472 342965 - 48 Carr Lane, Grimsby, South Humberside, DN32 8AR
- John Veall Gas Engineer
- 01724 856752 - 95 Doncaster Road, Scunthorpe, South Humberside, DN15 7DE
- A P Kilby Gas Services
- 01482 669339 - 22 Linton, Elloughton, Brough, North Humberside, HU15 1FE
- G S M Horncastle
- 01507 523740 - 118 Tennyson Gardens, Horncastle, Lincolnshire, LN9 6DG
- Instagas
- 01522 539146 - Instaheat Deacon Rd, Lincoln, Lincolnshire, LN2 4JB
- Seas End Gas
- 01406 371555 - 9a Seas End Road, Spalding, Lincs, PE12 6LD
- W Blain
- 07957 289775 - 12 Coningsby Road, Scunthorpe, Lincolnshire, DN17 2HH
- Dave Ibbotson Gas Services
- 07966 144012 - 1 Axholme Ave, Crowle, North Lincolnshire, DN17 4EG
- Gas Tech Heating & Plumbing
- 01895 678741 - 3 Larne RD, Ruislip, Middlesex, HA4 8DS
- Gas-serve
- 01780 482519 - 21 Nairn Rd, Stamford, Lincs, PE9 2YR
- Bottesford Heating and DEA Services
- 01949 843576 - 13 Church View Bottesford, Nottingham, NG13 0AE
- Kbr Gas Services
- 01476 567029 - Belton Grove, Grantham, Lincolnshire, NG31 9HH
- Gaswise (lincoln) Ltd
- 01673 861660 - 18 Sudbrooke Road Scothern, Lincoln, Lincs, LN2 2UZ
- Bottesford Heating and DEA Services
- 01949 843576 - 13 Church View Bottesford, Nottingham, NG13 0AE
- Hits Limited (Home Improvement Trade Services)
- 0845 1367465 - Island Carr Road Island Carr Industrial Estate, Brigg, DN20 8PD
- Mark Garner Heating and Plumbing
- 0845 8324115 - 5 Wiseholme Road Skellingthorpe, Lincoln, Lincolnshire, LN6 5TF