Unless you already work for the airport and get the chance to train internally, you will need ADC/APP ratings at least before you'd be considered. Rad would be a dream come true for them as there's not many about with RAD willing to move over from the mainland.
Pay scales are decently healthy and it's not that expensive to live.
Good bunch to work with, but a bruising roster unless drastic measures have been taken in the last 2 years. Always the possibility for an out-sourcing to NATS but the success of the Bristol/NATS bid could have a bearing either way.
There used to be a policy of only recruiting from an advert (either in flight or on their website) due to HR being scared of employment law (unlike everyone else over here on the mainland).
But it can't hurt to write and show interest, at least they might let you know when they'll be recruiting again.
PM me your email address for a contact name.