The documents are out of focus and very difficult to read. However, I have managed to read them.
In title number NT 414707 there is a transfer referred to dated 11 November 2005. That is the transfer to you and you are going to need to get a copy of that transfer and the transfer plan.
Incidentally, there is a restrictive covenant not to use the land for anything other than amenity land (2 of the charges register) so I assume that there is an indemnity policy in place in respect of that breach.
On the final page, you will see that it says and coloured brown is the part of the road included in the title.
It says that the land coloured blue is still coloured blue. That’s because sometimes, for some bizarre reason, the land registry change the colours on the title plans from that on the transfer plan.
However the colours only refer to the right of way 3 in the Charges register so we can discount those.
I think the situation here is that either the title plan is wrong for when you bought the property and the road should not have been included or if the title plan is correct and the road should have been included, there is a possibility that the house is built in the wrong place. I think the latter most unlikely that it was the intention that the road was not to be included (if it is no use) and that the whole plot you were buying would be moved further along.
This is not going to be quick to sort. If the owner of the adjoining property steadfastly refuses to let you have the title to the piece of land on which your house is built, but you are faced with a court application to have the court determine where the boundary should really be.
What you might want to consider doing, because it’s risk-free and going to be quicker and cheaper than going to court is offering them, say, a much reduced sum of money, say, £10,000, which you would let them have on the sale of the property. The offered needs to be made on a without prejudice basis. However that decision is yours as to whether you want to do that or not.