Definitely avoid this company. They will try to rip you off.
I asked them to fix my dripping tap. The engineer came, did not even bother to look into the tap and suggested the entire tap needs to be replaced: gave me a quote for £340 + Labour! The whole visit was over in 5 minutes - for this "service" they charged me £94.80 (including VAT)!. I had given them my card details, just for completing the booking (this was what they told me). However they simply took this money from my card following the visit.
I replaced the ceramic cartridge myself after this. A cartridge costs just £4 from e-bay! The tap works perfectly fine with no dropping now. I am disputing the charge through my bank now and will follow legal suit if this does not work.
Stay away from this company!