Jamie and Lesley
What I was trying to point out was that the radios WILL work in this country, nobody is disputing that, but the frequencies they use are not the same as the UK one. The ones that are used in the US are allocated for different purposes in the UK. You could be quite happily chatting away in Alton Towers whilst the Fire brigade is trying to solve some emergency with interruptions from your family and lives could, in the worst case scenario, be put at risk.
This was the reply I got when I asked the question before.
"Further to may last post heres some more research I dug out last year for a similar question.
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I did a little reasearch last year before choosing to buy in the USA.
I,m no expert but have had to legally license channels in the UK for stage and TV use before.

With ref. to Radio Communications Agency UK and Family Radio Services USA.

UK PMR frequencies
446.00625 MHz
446.03125 MHz
446.05625 MHz
446.08125 MHz
446.01875 MHz
446.04375 MHz
446.06875 MHz
446.09375 MHz

And as you can see the US frquencies are totally different.

USA/Canada FRS Frequencies
1 462.5625 8 467.5625
2 462.5875 9 467.5875
3 462.6125 10 467.6125
4 462.6375 11 467.6375
5 462.6625 12 467.6625
6 462.6875 13 467.6875
7 462.7125 14 467.7125

WARNING: USA FRS frequencies are allocated to fire, and police services in the UK.

The UK channels are definatly not licensed for personal use in the USA.
The sub codes make no difference they are only like access codes not channel frequencies.
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Hope this makes sense.