Leyland Tiger 1251 (OXI 1251) looks like it has just been transferred to Coleraine from Newtownabbey. I saw it in CL garage today minus its destination screen. Coleraine and Newtownabbey are the two depots I know best. I live in CL but I am at University at Jordanstown which is served mainly by NB.
Apart from now the only buses moved away from NB after the arival of their new Scania's 709 - 714 were Renowns 2816 - 2820. As far as I know Bristol RE 2432 is still in service at NB. Age wise I would say that NB must have one of the most modern line up of buses.
Also parked up in CL today was Goldliner 525 (PXI 5525). I t looks like 525 has been repared after its accident in Larne.