My saiing club two weeks ago had a talk by Guy Nicholls, Principal Marine Surveyor at Solent Marine Surveys. http://solentmarinesurveys.com/
He told us all about his work, including the range of survey types available and the limitations of them.
He talked about the problems he encounters with various makes of boats but clearly thought Nauticats are very sound.
I talked to him afterwards and it turns out he is a friend of Clive Stratton, who is the Nauticat UK agent and Nauticat broker.
He told me Clive uses him for surveys.
I’ve no idea about prices, it obviously depends on what type of survey you want.