Yozza is now BTM. Could give Fred at BTM a call, if it's from Fred the quality will be top notch.
Other alternative is if you live near Wales or are happy to travel, you can't go wrong with Charlie at Pro Speed. I only live nearby but he lent me a courtesy car for the day so I wasn't restricted while he built me an exhaust. He cut back into my cat as well to remove the 2 1/4" bottleneck. I noticed a little more poke around 3k but it was never going to be anything to cream over. It's the noise and gurgles that I went for.
Get on YouTube and have a listen to some of the sound samples that folk have uploaded.