Dear Jac: Here’s a training tip – make it clear to staff what they can and can’t sign for.

This interesting little tale comes from Paul Henshaw, whose current Spar store trades in Meliden, near Prestatyn, North Wales. He used to own another store not far away at Bodelwyddan, and in 2001 a member of staff signed him up to a five-year leasing agreement with a hygiene services company ...