See details here:
http://garaiste.yuku.com/topic/7335?page=7

It's the one that was on long term contract hire from Aircoach to Citylink which has entered the Aircoach service fleet as Aircoach have ended their contract with Citylink for these services. It's a very nice coach. They also have 3 Irizar SC's but only the one PB. The livery suits it perfectly