I've done the cable change on D2, it is not to difficult, just use the string as has been suggested.
The Disco' Sport has a 2 piece cable, joined in a plastic sleeve next to the battery box, is Freelander the same ? If so check there.
To check...
Update….
3good days of lanes. We decided not to do strata as lots of bikes out on the Taffy Dakar.
They warned us 1 normal lane had a landrover off the edge & rolled down the bank & been there a few days. We was able to miss the section...
Is it connected at the catch end?
The fact that the handle is also broken suggests that perhaps it is being pulled too hard - which could suggest that the cables have stretched over time (needing more movement on the latch).
If you replace...
It really depends what you want, but I think they sound a little expensive... maybe not if they are forecourt sales though, rather than private. Of course, it depends on the quality of them.
Generally, the F1 is older but easier to work on...