• Gas Safety Check Baildon
• Gas Safety Check Banbury
• Gas Safety Check Barlby
• Gas Safety Check Barnard Castle
• Gas Safety Check Barnsley
• Gas Safety Check Barton-upon-Humber
• Gas Safety Check Batley
• Gas Safety Check Beaconsfield
• Gas Safety Check Bedale
• Gas Safety Check Bedworth
• Gas Safety Check Beverley
• Gas Safety Check Bewdley
• Gas Safety Check Bicester
• Gas Safety Check Bierton
• Gas Safety Check Billingham
• Gas Safety Check Bingley
• Gas Safety Check Birtley
• Gas Safety Check Bishop's Cleeve
• Gas Safety Check Bolsover
• Gas Safety Check Bourne End
• Gas Safety Check Bourton-on-the-Water
• Gas Safety Check Bradford
• Gas Safety Check Brampton (South Yorkshire)
• Gas Safety Check Brandon (Durham)
• Gas Safety Check Bream
• Gas Safety Check Bridlington
• Gas Safety Check Brigg
• Gas Safety Check Brighouse
• Gas Safety Check Brighton
• Gas Safety Check Broadway
• Gas Safety Check Bromsgrove
• Gas Safety Check Buckingham
• Gas Safety Check Buckinghamshire
• Gas Safety Check Burton Latimer