Tom Tom One GB - unprade maps?

[BigMansZetec]

If I was the purchase a basic Tom Tom system with just GB mapping, is there anyway it can be upgraded with european maps at a later date?

Cheers

Will

[BigMansZetec]

OK, cheers guys, didn't know the extra maps would be so expenive. Like you say it would make sense to go for the european one straight off if the price difference is that low.

Thanks.
Will