penders - 3:56 pm on Nov 5, 2011 (gmt 0)

what is the "GBP" Code? do you mean as GBP45.00

1. GBP is okay but does it look ok? GDP25.00 does Google look for this more than the actual pound sign? £25.00

The ISO 4217 code ("GBP" for Great British Pound) should be separated from the amount by a space and appear before or after the amount depending on which countries standards you follow. The pound sign (£) is potentially ambiguous as there are several different currencies that use the pound, as there are with the dollar ($). The ISO code removes this ambiguity. However, whether it is really necessary to use the ISO code is really down to your target audience IMO (as with everything web). If you are running an international site dealing in multiple currencies then the ISO code might be necessary, however, if it's a UK only site then probably whatever is more acceptable to your users. TBH, I think most Brits expect to see the pound sign. All online shops I use, use the pound sign.

2. £ and £ both do the job but concensus on which is best?

Potentially £ will work on more (historic, non-standards compliant) browsers and £ should work on any standards compliant browser made in the last 14+ years?!