All the major banks and building societies in the UK are introducing the same system as Nationwide for their personal customers.
The only exceptions I know about are:
a) HSBC/First Direct - who have ruled this system out as they don't believe it is secure and want something they can roll out globally b) Abbey - who haven't quite made up their minds yet whether to roll it out yet ot not. c) Lloyds - who are rolling out a SecureID type dongle instead.
Regards Sunil