The 27 MHz CB27/81 Bandplan is a list of the channel frequencies for UK-only FM CB radio CB radio in the United Kingdom.

Unlike the scheme used in the U.S, and subsequently elsewhere in the world, the original UK 40 channels progress in order with 10 kHz spacing. These channels apply to UK-only radios meeting MPT-1320 (marked CB 27/81) and MPT-1382 (marked PR 27/97, these may also feature the additional 40 CEPT channels).

Frequency             Frequency
  (MHz)    Channel      (MHz)    Channel
~~~~~~~~~  ~~~~~~~    ~~~~~~~~~  ~~~~~~~
 27.60125   1          27.80125  21
 27.61125   2          27.81125  22
 27.62125   3          27.82125  23
 27.63125   4          27.83125  24
 27.64125   5          27.84125  25
 27.65125   6          27.85125  26
 27.66125   7          27.86125  27
 27.67125   8          27.87125  28
 27.68125   9          27.88125  29
 27.69125  10          27.89125  30
 27.70125  11          27.90125  31
 27.71125  12          27.91125  32
 27.72125  13          27.92125  33
 27.73125  14          27.93125  34
 27.74125  15          27.94125  35
 27.75125  16          27.95125  36
 27.76125  17          27.96125  37
 27.77125  18          27.97125  38
 27.78125  19          27.98125  39
 27.79125  20          27.99125  40