Your best bet would be radio's that are the PMR446 standard througout Europe. Range is very subjective, but in the clear, you'll be getting well over a mile at least. Once trees and buildings are in the way, obviously, the range drops.
Although Maplin below arent the cheapest around, at least its a shop that you could return to if in the worst case scenario, one goes belly up.
Better to spend a bit more to get the ones that offer a bit of privacy with more channels.
Motorola makes good 2-way radios, I swear by them.
DK
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