Bathroom lighting -- additional switch and ceiling lamps

Hi

I'm doing up the bathroom at home and have a query about lighting.

Currently, there is a single pull-cord switch and a single ceiling light.

I want to replace the existing light with two switches:
-- One switch connected to two 240V 50W halogen recessed ceiling lights (IP65 rated, for use above a walled-in shower area)
-- Second switch connected to three 240W 50W halogen recessed ceiling lights (IP65 rated, for lighting of the remainder of the bathroom)

Is it possible to do this? I had intended to take a 'spur' (correct terminology?) off of the mains supply feeding the existing switch to connect to the new switch, and then run two and three lights off each, respectively, connected in parallel.

Any advice would be appreciated.

This will be part p notifiable, just so you know, whether you do so or not, is your choice, but IMHO it shouldn't be one that is made do to ignorance of the existance of the relevant building regs

Now, onto more important stuff

yes, if you find where the lighting circuit 'loops in' for the bathroom light, and take a feed from there, probably to a junction box, where you go out to the switch and the two lights.

if your bathroom ceiling is less than 2.25M high, its likely that some of the lights will fall within bathroom zone one, and the way I read it (this is where I pray that the NICEIC technical document i've been reading has a correct interpretation of the regs in....), you need to have RCD protection if this is the case (which is silly really, because an electric shower doesn't 'need' rcd protection... but who am I to find sense in wiring regs...), if you want to avoid RCD protection, then install SELV lighting

the way i read the origonal posters post, he doesnt have a clue how to do it any way
I quote

..........'spur' (correct terminology?) off of the mains supply feeding the existing switch to connect to the new switch, and then run two and three lights off each, respectively, connected in parallel.

Click to expand...

...which is probably why he was seeking some sort of guidance on here.