Then you must be shot down in flames because what you are proposing
clearly violates the wiring regulations (BS 7671). Supplementary
bonding to exposed-conductive-parts (and therefore the CPCs) of
electrical equipment in a bathroom has been required since coming of the
14th edition of the IEE Regs (c. 1966). When the revised Section 601
(bathroom rules) came in to force in 2000 this was modified to require
bonding to the CPCs of *all* circuits feeding equipment within the
zones, _whether_or_not_ there are exposed-conductive-parts. Thus you
must still bond to the relevant CPCs, even if Class 2 equipment is
installed. This is clearly intended to provide for safety when
equipment is subsequently changed.

HTH
--
Andy[/quote]
You are of course dead right Andy, the only other thing is that all supplimentary equipotential bonding must be done in 6mmsq cable minimum and there are now special earth bonding clips for radiators, baths etc.
finally unless you are a qualified electrician and have registered and been asessed under part P building regs you are breaking the law doing this anyway as bathrooms are clearly defined as risk areas.