Gas pipe repair across London

Domestic gas pipework inside a London property has to be installed, tested, and repaired strictly to BS 6891 using approved gas pipework materials, sized 15 mm or 22 mm to match the appliance load and run length. Any defect on that internal carcassing, a weeping compression joint behind a kitchen unit, a porous fitting under floorboards, or a damaged section after building works, is a notifiable gas escape under the Gas Safety (Installation and Use) Regulations 1998. The repair must be carried out by a Gas Safe registered engineer, soundness-tested before and after, and recorded on a Gas Industry Unsafe Situations Procedure (GIUSP) form where the defect was classified Immediately Dangerous or At Risk.

We carry out gas pipework repairs across every London postcode under Gas Safe Register #972173. Our vans stock 15 mm and 22 mm BS 6891 pipework, end-feed and Tectite Sprint push-fit fittings, BS EN 751-2 jointing compound, full-bore lever valves, and a calibrated digital manometer for the tightness test at 21 mbar working pressure. For any fault on the buried service pipe between the street main and the meter, we coordinate with the National Gas Emergency Service 0800 111 999 and the network operator (Cadent Gas in north, east, and central London; SGN in south London), who own that section of the supply and carry out the external replacement themselves. Every internal repair is classified ID, AR, or Not to Current Standards and documented for the homeowner, landlord, or insurer.

How we deliver

No surprises, no upselling. The exact path every job follows.

1. 1
   Pre-work soundness test
   Digital manometer at the meter outlet test point. Two-minute let-by check at standing pressure, then a tightness test at 21 mbar to BS 6891 to confirm and locate the suspect run.
2. 2
   GIUSP classification
   Defect classified Immediately Dangerous, At Risk, or Not to Current Standards. With the customer's written permission we isolate any ID appliance or section before further work.
3. 3
   Isolate and purge
   ECV closed at the meter, downstream pipework purged to atmosphere through a controlled vent, inert volume confirmed at the work section before cutting.
4. 4
   Repair or replace the defective section
   15 mm or 22 mm BS 6891 carcassing cut to length, joints made with end-feed solder or Tectite Sprint push-fit, threaded steel sealed with BS EN 751-2 compound. External buried service pipe faults are handed to the network operator, who owns and replaces that section under their own jointing procedure.
5. 5
   Pipework clipping and protection
   Internal gas pipework clipped to BS 6891 spacing (15 mm at 1.2 m horizontal, 1.8 m vertical). Sleeved where it crosses brick or concrete. Yellow identification tape in concealed runs.
6. 6
   Post-repair soundness test
   Repeat let-by and tightness test at 21 mbar. Zero permissible pressure drop over the prescribed test period before we will sign the work off as compliant.
7. 7
   Re-pressurise and recommission
   ECV opened slowly, each appliance purged at the inlet test point, burner pressure checked against the data badge, and Anton Sprint Pro FGA combustion readings logged on every appliance brought back into service.
8. 8
   Written certificate and GIUSP record
   Certificate detailing pipework section, materials, test readings, and updated GIUSP classification. Issued same-day by email, retained for two years, accepted by insurers and agents.