Vat
You most definetly can reclaim Vat on goods and services from the uk customs office out of northern Ireland if you are an Irish citizen I know because I have done it.
You start by going to an accountant and setting up as a sole trader and get them to reclaim the vat for you,the whole process takes between 8/12 months and will cost you about 500 euro's but you will receive about £6'000 stg back so is well worth the process. Forget what any body else says as they clearly havn't been through the process,if you have any questions pm me.