Problems encountered: 1) The advisor did not check out my reasoning for the choice of design. Result: wrong design for my needs, also more expensive than needed be. 2) The surveyor did not foresee problems when allocating time for the fitter. Result: Incorrect installation of a pressure pump, which was not the one that had been delivered. I don't even know therefore whether the pump is new or had been used elsewhere. 3) Underfloor heating never worked. When it was repaired, it was clear that the loops of the electric netting are so wide that the floor never gets evenly warm. 4) Expertise: my lack of knowledge meant that I was strung along with evasiveness, stone-walling, persuasions of what I had to accept. Result: Two different independent experts did a survey with a quotation for completing the work according to contract. Now, 10 months later (time and energy consuming months), my credit card company, First Direct, is financing the local expert to complete the work for £ 1,200.