Hi,
The company that I'm using cover your area, too. They've done a good job with my windows inside and out. You can give them a try if you are still searching 020 3746 2411.

Good luck

Hi William, I can recommend you the cleaners from Clean N Gone. They have window cleaning services at affordable prices: http://cleanngone.com/window_cleaning_london.html

I would highly recommend squeak and shine. Lovely guy, does my 3 bed detached house for £15 per month. I asked him about the equipment he uses because the way they clean windows these days is with a really long pole I had a look at the supplier of these poles at https://wfp.co.uk/ and they go for £400+! needless to say I will not be buying one for myself and will still to just paying the window cleaner to do it for me haha