Re: Flying from Fairoaks - inside Heathrow CTZ
All I can say is be aware that Farnborough instrument traffic for the westerly runway will pass just south west of Fairoaks ie over the 'standard' Fairoaks VFR departure at 1900ft alt, hence the 1400ft lid on departures under a Letter of Agreement.
Use mode 'C' if the aircraft has it.
When local area flying, there are lots of helpful landmarks eg Bagshot mast, A3 road from Wisley/Ockham to Guildford; Guildford has a cathedral on a hilltop but Woking only has tall buildings (which stand out from a long distance away) Going east, Epsom racecourse is unmissable!(on a hilltop once again)