Thanks for your reply. It is really helpful to get some information from a human instead of snooping around Wiki pages.
I agree that what I am trying to do is on the business side of things, but often for people who work with / enjoy technology then consumer grade gear doesn’t often satisfy us!
As you said with out police, TETRA and Airwave, I have had a look at the MTH800s. A feature of them that I like the idea of is GPS. As I said, these radios are for security so to be able to see where people are at any time would be perfect for what we want! Am I right in thinking that over here, Airwave is a network that is all over the UK?
Again with P25, DMR and TETRA, would all of these offer the GPS functionality? And where would I start with looking for a system? I would need a repeater as most of the handsets are only 1W and range is a must with this system.
Thanks again for all your help!