right o mate, i take you haven't seen the very very long flip key info thread in this section so here is a quick brief for ya
1) key can be cut at timpsons or similar, check you local business directory for places that cut car keys, simple (ps don't know whether or not timpsons are about in NI)
2) you shouldn't need to take your key anywhere to get it programed as you can do it yourself as long as you have a spare key come with the car, carefully pull apart your spare key remove the very small transponder (small green thingy thats already coded to your imobilaser and put it in the new key
. all you have to do now is code your central lockin
3)
coding your central locking is very simple too tbh, to code the remote you need the old original key in the ignition the one with the buttons on still containing the transponder) with it turned on then lock the door with the new key remove key then press unlock and horn will blip wait 6 second and press unlock again the key is now coded to your car!
hope this helps bud, if you get stuck just check out the filip key info thread
ps welcome to the site btw