Niko came round to do some repairs to my bath and sink silicone today, and told me he has been out of town attending to some family business for a few months. But he wanted to let everyone know that he is now back in London and working again -- and I can confirm that he still does an excellent job at a reasonable price.
I have also always used John for anything to do with my boiler. He fitted a new one a few years ago and has kept me up to date with services ever since. He's very good, and I can also add my recommendation to this one.
I can add my recommendation for Niko, who fitted a washing machine for me. He is pleasant, reliable, very fairly priced and even (unprompted) follows up the job several weeks later to check things are still OK. I would definitely call him again.
Here's another recommendation for Dave Nichols - the Cooker Man. He was incredibly efficient, responding to correspondence immediately (on a weekend) and had the whole thing (an old cooker) fixed in a matter of a few days. The best by far. His number is 07506 104882 - and thanks to all who recommended him on this forum before.