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 C
This information is somewhat dated, but seems to be valid for
those services I can see to check.