Have a look at the satellite view on google maps wrt the following.
As mentioned, there's the Littleworth Common cut-through – along Littleworth Rd/Arbrook Lane (pretty quiet iirc). From there you can cut south towards that cleared section this sits either side of the A244 just north of the A3 – there's a crossing point marked there for horseriders.
Cross the A244 and continue along that clearing, the path continues west and slightly south rising up a banking (you can see it clearly on the sat. image). That turns south to reach the footbridge over the A3 (the first one west of the A244/A3 junction). You can pretty much carry on south from there, after that my recollection's a bit hazy but you'll cross Sandy Lane and carry one southish whichever way you need to. The spot just NW of Oxshot station is a big clearance on the hillside (station's the low end) – there's fast run down the hill to the west of that, or a flight of wooden steps to the east side.
The sandy coloured area nr the junction of Sandy Lane and Warren Lane is a big sandy-ish bombholes kinda thing (rooty 'round one side), south of that (going towards that hillside clearing) are – or used to be a few years ago – some jumps.
There's a few pleasant (tho' not awfully exciting) little routes 'round there but I'm blowed if I can remember quite where they are.
BTW – there was a load of tree clearance scheduled in that general area, so what's shown on the satellite image may well not be there now.
