KDDD
Why not go and sit in at a busy tower/approach unit. Most units are happy to accept visitors - and you will get to hear from us what annoys us on the RT, and they can explain. They will no doubt dispel any rumours that ATCOs hate pilots!!!
A local unit to you would be best (Wattisham LARS or Cambridge airport maybe?)
If you get really stuck come and visit LTCC, West Drayton.