I see from comments posted on other forums that there are currently proposals being discussed for the 17th edition of IEE Regs./BS7671 to allow the fitting of sockets in bathrooms.

If adopted the proposed revision would allow 30mA RCD-protected sockets to be fitted outside of zone 2 (i.e. more than 0.6m / 24" from any tub or shower) when the 17th ed. takes effect from mid-2008.