Hello mate,
why don't you just use your seats in the LR?
They do take a hammering in their original factory condition.
All that discomfort with covers that never fit, they always try to get out of the car with you!,
then you take them off and hand the LR over to the next owner with great seats!
Use it for what it is meant for,
defender interiors take all the mud and anything else you, your family, your dog can throw at them and thay still do what it says on the tin!
I've never understood seat covers?
Orignal seats look so much better.
Good luck what ever you do.
cheers................