It's not the BBC, but this could be what you're looking for:
THE NAVIGATORS
Drama about the fortunes of a group of railway track workers and the effect of British Rail privatisation on their lives.
Wr: Rob Dawber, Dir: Ken Loach
Dean Andrews (John), Tom Craig (Mick), Joe Duttine (Paul), Steve Huison (Jim), Venn Tracey (Gerry), Andy Swallow (Len), Charlie Brown (Harpic), Juliet Bates (Fiona), John Aston (Bill Walters), Graham Heptinstall (Owen), Angela Saville (Tracy), Clare McSwain (Lisa), Megan Topham (Chloe), Abigail Pearson (Eve), Charlotte Hukin (Rose), Jamie Widowson (Michael)
Channel 4, 2 Dec 2001 (110 mins)