The ‘Franchise Affair’ was a 6 part serial, which I think was hosted at Pebble Mill from London. It was transmitted in 1988. Terrance Dicks was the producer, Leonard Lewis the director, and Phillippa Giles the script editor. Dave Bushell was the lighting director and Rob Hinds the production designer.
The story was about a mother and daughter, living in a house called The Franchise, who are accused of kidnapping a 15 year old girl and making her work as a servant. See BFI database: http://ftvdb.bfi.org.uk/sift/title/417012
‘Took this shot while we were shooting ‘The Franchise Affair’ at Bewdley station in 1988. I don’t think any work is going on – just three guys examining a very large ‘Boy’s Toy’. I think it’s Tom Beach (Props Buyer) on the left with Keith Moreton (chargehand electrician) and Eric Crouch (electrician).’