The Daventry sector frequencies may be a good starting place they are :-
The first three frequencies can be tuned on a scanner with 25Khz steps( in theory if you want to monitor high altitude airways ,you will need a scanner with 8.33Khz steps but with the 7100 you should be able to use the 5khz step to get close enough )
note these are the actual frequencies to which your scanner should be tuned to and should not be confused with the channels as designated by ATC( eg 134.390 which is the channel designator for 134.3916 or 127.880 which is 127.875 ).
Last edited by Chris P
on Thu Feb 02, 2017 9:42 am, edited 1 time in total.
Regards Chris aka G8FFF nipper or tazmin88