Sorry if this is off-topic.
Can anyone recommend a handy person/ plumber/ plumbing company in central London, SW7, to change an on/off valve cartridge in a shower? I am out of the country.
It may require drilling away a small (M3 3 mm long) groove screw to remove the faceplate (The groove screw may be worn out. That is why a say handy) Then a simple spanner will open the present cartridge. The old cartridge has a rubber washer and is malfunctioning. The new one is ceramic and has been delivered at the property already.
I am not happy with the plumbing company I have used before.
Thanks,
Antonio