A word of advice
In the UK there are no £1 notes, we have £1 and £2 coins, which means we end up with a lot more metal than our American cousins. £2 coins are particularly heavy. Add to that the (annoying) fact that £5 notes seem rarer - or at least the coffee shops I go to never seem to have any...
Its not unusual to break into a £10 note and get, say, £8 back in a combination of coins. So having a wallet with nowhere to put coins is much more of a pain in the UK than in the USA. Ive spoken about this with American friends who say you rarely have more than a dollar or two in coins on you. (Yes, it was a fairly dull conversation, I forget how we got on the topic). Here I usually have £4 or £5 in coins.
The point is that carrying that many coins in a suit pocket in the UK looks daft. You jangle to hell and it takes the shape out of your pants. Having a coin bit in your wallet is a lot more useful over here. Losing one to gain a space to put notes isn't necessarily an improvement, its more like solving one problem and gaining another.
its possible not everyone has this problem - if you live off plastic for example or you keep your coins in your briefcase, as some people I know do. However its something to bear in mind for people in the UK thinking of buying one, or for DACo if they're looking to export them more frequently.