Back in 1999 I used Spiros Courtelessis, based in Corfu town and found him to be OK. He is well known by the guys in the marina, the only telephone number that I have is 44180, you'll have to work out the code for Corfu town and I think now that there will probably be a 2 added to the start of that number.
After a problematic survey experience in Germany, with an utterly useless German surveyor (Gerd Kall of Flensburg) I'd be inclined to send my man out from the UK.
I can also recommend Spiros Kourtelesis. He was appointed by Pantaeneus for a claim I had in 2003. I found him very helpful and pragmatic. His English is v.good so no communication problems. The number I have for him is 2 661 022 933.