Limited access to pipe in wall and short length of pipe and joint made repair particularly difficult and 8mm
Pipe clearly difficult to work with as compression fittings failed to make watertight seal. The plumber
Persisted and increased pipe to 15mm by soldering various sections of pipe and fitted larger 15mm
Lockshield. If compression joints had been successful then time taken would have been halved but I appreciate effort made to resolve the issue and bring the radiator back into use.