Ive got a x reg uk turbo. Im looking to remove the 1st cat. Any idea how easy it is to do yourself?

 

If you mean the cat in the centre section, it's easy, helps if you have access to a ramp but I just found a high kerb and crawled under the car. Downpipe's probably quite tricky to get at but you don't need a garage.

Having said that when I took the exhaust off I just got a garage to do it for £25, couldn't be bothered to go crawling under the car again.