I also have nothing but praise from Libresco. He was very helpful ad always answered my queries within 24 hrs if not quicker, which is why I bought from him.
I wouldn't have too many concerns over the Royal mail, but if in doubt, email and see if they can do DHL/UPS or whatever for you. There may be an added cost if that isn't their (Libresco's) usual route. Though, mine came via UPS.