I seriously wonder why Gatwick is like this.
Unlike Heathrow, the place is pretty quiet for much of the day and could easily handle GA traffic.
Europe has loads of airports which dwarf Gatwick or Heathrow in size so nobody should feel in some way inferior for not having been to Gatwick.
Incidentally Gatwick publishes perfectly reasonable VFR approach plates, via Jeppesen so probably via the UK AIP too. You get the usual VRPs
I hate VRPs; the IR was worth doing just to never again have to find another VRP