This path was used by monks when travelling from the St Mary's Church to Chertsey Abbey (666 AD). Recent finds of Roman pottery in the dig preceding the Chertsey Museum refurbishment seem to indicate the possibility of a Roman settlement around this area.
"But in Thorpe itself you can sit near the church on a stone stile, and look round at walls and roofs which might surely have sheltered Sir John Denham himself, walking by Thorpe to Chertsey. The site stands across an ancient right of way, which crosses the fields. a straight line from the churchyard to Chertsey. John de Rutherwyk, doubtless, often walked or rode that lonely by-way; perhaps it was he who raised the level path dry and well-drained out of the swampy, snipe-haunted meadows that lay between the little church and the great Abbey." ~ Eric Parker 1908
The stone stile that you have to cross at the start of this journey, unfortunately makes it unaccesible for wheelchairs. There isn't a specific place you can park, though if your lucky there will be space on the road close by (see wp) where you can station your geomobile! :)
Good luck on your quest and don't forget to listen out for the screams! :-)