Passing through recently is

Volvo B12B SUI8197 (now sold)
http://www.ebay.co.uk/itm/2003-VOLVO-B12...ltDomain_3&hash=item487c81b22e

Volvo B12R YCZ8703
http://www.ebay.co.uk/itm/VOLVO-B12R-PLA...ltDomain_3&hash=item487cb17bca

Another Scania Irizar PB has joined the fleet too, tri-axle but not sure what the registration is