I fitted a 10W LED for a friend; it was £10 from B&Q and is rewirable (need to use flex, not FT&E). That lights up about 20' or so with about a 5 deg. uptilt and isn't dazzling even from 10' away. Ran 3&E to the PIR so that a 2-gang switch can bypass the PIR (I use a
2-gang so that the system can be turned off locally rather than at the CU, otherwise a 2-way 1-gang would do).