A robber makes a raid on the local supermarket just as Del and family are out shopping. What's worse - Del sold him a duff watch down the market, and it's that that's got them into trouble in the first place.
Source: Only Fools and Horses Season 5 DVD
Episode number: 5x3 Airdate: Sunday September 14th, 1986
The idea for the script was based on a true story that John Sullivan had read about a small-time criminal who went into a supermarket and pulled off a scam with the security manager and the store manager.