Which Freqs work best in built up areas

[Geordie_Rob]

I have no choice to visit London through work (except change job maybe) and I just try to spend as little time as possible there. No sight seeing, no going to the big shops etc.. Just there, work, home.

But as Dev said, maybe RV points would be better than handhelds for keeping away from unwanted attention. Especially with the sas style police having shoot to kill guidelines (they shoot with the intention of taking you out before you can take numerous people out & ask questions later - remember the Brazilian electrician at Stockwell tube station in 2005).