Alvin,
Are you talking about once off/irregular hiring, or joing a club and regular flying type of hire?
As I understand it, most of the places in Weston (if not all) will require you to have a 5 hour checkout, regardles of experience (save exceptional circumstances), and won't be happy for you to take the aircraft away for more than 24 hours.
The clubs at Dublin Airport are more than happy for you to take aircraft away, but you have to be a member and pay monthly subs, which probably wouldn't suit if it's a once off hire!
I've no idea about the other airports.
dp