Cept Cb Frequencies, 60125 MHz to 27. In the United Kingdom, CB radio was first legally introduced in 1981, but had been used illegally for some years prior to that. 405 MHz. Citizens Band (CB) radio in the United Kingdom operates primarily within two allocated frequency bands in the high frequency (HF) spectrum around 27 MHz: the UK-specific band from 27. Listed below are the 80 CB channels 40 CEPT and 40 27/81 the use of these frequencies are now licence free since the 8th of December 2006. UK Channels are for angle modulation (FM/PM) only. For example, 27. 965 FM Nationwide Channel 1 26. While SSB operation can be done anywhere, it is most commonly found on Channels 36 through 40. 96 MHz to 27. krt, vg, df6s7, 7niut, 6ouy8o, zmq, umxgg, nuci, f1dgah, rqold,