110 rear springs-towing a sankey trailer.

Hey chaps.
Friend of mine has just got a 110, the rear springs are buggered, siting very low, fronts are fine.
He tows a sankey field kitchen and has the landy loaded as well.

He has asked me to find and fit a new pair of rear springs for him. Landy just has rear springs-no helpers fitted.

Are britpart HD rear springs any good?
Or can you reccomend another brand.
I have had a google, but loads of conflicting info out there.
Cheers.

Never had any problems with their springs. With a bit of weight, the ride is quite good.