Dave Plowman (News) wrote:

B&Q etc sell wall plugs specially for cable clips. Rather long winded but
worth it IMHO. In B&Q you'll find the beside the cable clips rather
than with the other wall plugs. You'll probably need a drill for them
too - IIRC 5mm.

Or just drill a hole and pound a big 'splinter' of wood into the hole
with a hammer until it breaks off. Like a mini version of groundings
for skirting boards etc.