I was walking along this road for about a mile - and this wall and I stayed together nearly the whole way.
It struck me that I had never come across a wall that was so long and straight (ie without a corner). It is continuous - apart from just a couple of small sections where it had crumbled.
The wall borders one edge of a large estate in an area called Fisherwick.
Surely a wall as long and straight as that must be setting some sort of record (?) - for the region at least...