A good london laptop repair shop you trust.?

I have an Asus ROG G751JT.. I love it.. but a few years ago, I spilt a serious amount of a fizzy drink into it.. a year or so later, I paid over £200 to get the keyboard replaced..

(and I supplied the new £80 keyboard.!!) Recently.. one of the fans started getting occasionally noisy (not under load) and I'm thinking of just buying a new upgraded motherboard.. rather than paying nearly as much to just replace the fan.. and I dont want to use the same repair shop, as I feel he ripped me off.. I have one working arm, or I'd replace it myself.. can you recommend any london repair shops.?