As per the latest fleet news update currently delivered is (assuming i haven't manage to screw up my copy and pasting)
7150 - OW15 WJZ - re-registered to GO02 MBR (quite possibly the worst private plate I've ever seen)
7152 - OW15 WKB - re-registered to XL09 NCL
7153 - OW15 WKC - re-registered to XL10 NCL
7154 - OW15 WKD - re-registered to X9 XLS
7155 - OW15 WKE - re-registered to X10 LNE
7156 - OW15 WKF - re-registered to X10 XLS
Having done a bit of checking on the DVLA site, GO02 NCL has also been registered so I'd imagine that'll go on 7151
RE: X9 | X10 - Acquisition of interdeck coaches from Oxford Bus Company