Sparks fly when Gavin and Cheryl are forced to spend the day in close quarters. Plus, it's Sue's birthday. But will anyone have remembered her big day?

Gavin struggles to keep his romance with Cheryl under wraps. Brian starts acting strangely when a blood bank sets up in store. Charlie makes a huge decision.

Brian panics when Margaret spots an unwelcomed guest on the shop floor. Meanwhile, a much-in-love Gavin begins to worry that Cheryl isn't what she seems.