For the benefit of interested non-CB folk with receivers, we should maybe state that UK channel 27 is 27.86125MHz (NBFM). If previous years are anything to go by little local groups starting up on that frequency will find themselves having to get out of each others' way by moving to other frequencies.
A full list of the UK CB/27/81 channels and their frequencies is here:-
https://en.wikipedia.org/wiki/27_MHz_CB27/81_Bandplan