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Your property has the benefit of the rights granted in the Transfer dated 15/8/69
which was the Transfer, transferring the land that used to belong to your property to the third party, which will be the land edged green on your Title Plan.
Basically, when the land was sold off, the owner of your property reserved a right of way over the land coloured yellow. Hence, wher eit says "EXCEPTING and RESERVING to the Transferor" the Transferor is you/the owner of your property.
I am guessing, therefore, that the area coloured yellow, being the drive, was trnasferred to the third party in 1969, and therefore you have only a right of way over it. This would be confirmed if the land edged green on your Title Plan includes the land coloured yellow, as the land edged green is the extent of land transferred to the third party in 1969.
I hope this assits, but please let me know if you require further clarification.