If it's any use to know the required runway centreline lights intensity is 5,000 candela whereas approach lighting is 20,000, so with 30m spaced approach lights pre-landing threshold without the runway centreline lights there's maybe just as much chance of having the required visual reference for take-off with the higher intensity approach lights.
Gatwick 26L has a starter extension between Mike and Alpha so no runway centreline lights in this portion required (not sure why), also not sure at 08R end if Juliet to runway landing threshold has runway centreline lights, but if not maybe there should be as it's a full width runway between these two points.
Manchester's runway 05L/23R is about to have 15m spaced centreline lights (for take-off) installed pre-landing threshold at either end. This is in addition to the 30m spaced approach lights already there.