I called them a couple of months ago to get some questions answered and the reply i got was "have a look on the internet". I told him that i had done so and still had questions to which he huffed and reluctantly answered my questions in as few words as possible!!
That put me right off Ravenair (Liverpool), however he might have been having an off day and if someone can tell me they're not normally like this i might look at going to do my ppl there again!!!