Where can I find a general purpose (preferably insured) repairman/handyman in central London who can fix a range of small issues between long tenancies.

Looking for things like - white paint, hole fillers, chipped wood fillers, towel rail repairs, bathroom grout repairs, light bulb replacements, window cleans, cobwebs etc.

Basically small stuff, nothing major. But at the same time don’t want someone noob to accidentally drill into a pipe or wire and costing thousands.