Just down the road (or line) from me.
Freight trains on the joint line used to use the Sleadford avoiding line, double track, with just stopping passenger trains going into Sleadford. The other end of the avoider is another box.
The line going into Sleaford from both ends was also double track, but has been singled for some time. The southbound track on ther avoider is still used occasionally for chartes and diverted freights, but the northbound is not used, hence the vegetation. I guess the only way ther northbound would be reinstated is if there were a number of regular freights booked on the joint.