The recent NATS event at Barton emphasised the use of listening squawks, so here's a short list of local ones with the associated frequency:
Manchester 118.575, 7366
Birmingham 118.050, 0010
Leeds/Bradford 133.125, 2677
Doncaster 126.225, 6170
East Midlands 134.175, 4572
Other areas using them are:
Thames Radar/Gatwick 0012
Luton/Stansted 0013
NATS asks that we always use Mode C with these squawks.
Students are recommended to start their initial call to an ATC unit with the word "Student". This will ensure that ATCOs and FISOs recognise the lower experience level of the calling pilot and adjust their procedures accordingly. This AIC has full details.