Endorsing previous recommendations for Niko (07818 607583) on this thread. He's worked for me on several occasions over the past few years - fixing taps and a leaky water tank. I've also recommended him to neighbours in SE5, who have been very pleased with his work. He's a lovely guy, never overcharges and always manages to fit us in promptly, even though he's busy with callouts. Thank you, Niko!