Some of the Network Identity Group codes allocated in the U.K. are:
0x0450 BBC B 0x0827 TVS 0x11D2 ITV London 0x137B ITV A 0x1534 Tyne Tees TV 0x2242 BBC2 Wales 0x2DE3 S4C 0x3F27 Channel TV 0x3F8B Channel 4 0x41BB ITV London 2 0x457F BBC2 0x4954 ITV B 0x4F1A HTV 2 0x5AF5 HTV 0x5F34 Yorkshire TV 0x5FF6 BBC1 0x6940 Channel 5 0x6A99 Central TV 2 0x9821 BBC A 0x9F4B Scottish TV 0xA40B TSW 0xB51B Granada TV 0xBB0A TVS 2 0xC1DC Ulster TV 0xCF5C Grampian TV 0xDF39 Anglia TV 0xEDEF Border TV 0xF4EA Central TV 0xFC9C BBC CThis information is somewhat dated, but seems to be valid for those services I can see to check.