I've got a new build house which is wired ready for a CCTV camera... i
have a spare RF lead in the loft ready to connect to the distribution
amp, and next to the front door I have a wire concealed behind a
blanking plate. When I removed the blanking plate and touched the
wire I got a bit of a shock from it, so I'm assuming both power and
signal are combined within the one RF lead (though it doesn't have a
connector on the end at the moment)

Does anyone know what kind of CCTV camera i'd need to buy that would
work here? Looking around it seems they all require seperate power
suppies!

Thanks in advance!