It is indeed a pleasure to give a recommendation regarding Mariusz. He has done a number of jobs for us on our portfolio of properties in Kensington, Richmond and Twickenham for over 20 years. His workmanship is impeccable and he is extremely honest and trustworthy. Whatever advances you give him are absolutely safe as the Bank of England!!
You can rest assured that he will not run away with your money; seems to be par for the course in this country if you deal with cowboy builders. Mariusz is extremely intelligent and highly competent.
He is exceptional in handling difficult kitchens and bathrooms. As far as the latter is concerned his completed jobs are world class.
The only other comment of relevance to you is that he will not undertake cheap inferior jobs; as such you have to be prepared to pay a little more. This is fully worth it because you have peace
of mind and be assured of a classy product in the end.