Unfortunately I didn't have a good experience with Reece or Diamond drainage. They quoted me £90 Inc vat for the job of unblocking a sink, however charged my tenant £120 who paid it directly to them. I queried this and he gave me a gave me a ridiculous reason for the price increase, which I didn't accept. He eventually refunded the extra £30 after I repeatedly messaged for days, he hasn't provided a quote for me even though this has been requested many times. Not sure whether it was because my tenant is female he felt he could take advantage, but we would not recommend his services as untrustworthy in our opinion.