[urq] handbrake return springs

[spot.ontheroad]

Does anyone know of a place in the UK that stocks Ford part numbers 6141147 and 6141148? - these are the uprated handbrake return springs that fit the quattro rear calipers and that are featured in lots of previous postings on the subject of handbrake adjustment. I tried my local Ford dealer today and was told they were no longer stocked by their suppliers. Any pointers would be welcomed. Failing that, any one have a pair for sale?
Many thanks

Keith 

'87 WR