The actor also revealed that Sonia was brought back because she “wasn’t in people’s minds”.

Gavin and Stacey fans have been left seriously shocked after realising who the actress who plays Smithy’s mum, Cath, actually is.

Gavin and Stacey fans are in shock that Smithy ( James Corden) and Nessa ( Ruth Jones) have never kissed – but here’s why. On Christmas Day, viewers discovered the pair finally tied the knot after Smithy jilted the unlikeable Sonia (Laura Aikman) at the altar.

Gavin & Stacey fans tuned in en masse to watch last year’s finale ― the show’s last-ever episode, which aired on Christmas day. Since then, writers and actors Ruth Jones and James Corden have given viewers another last-ever treat,

The 'Smithy' actor revealed why the much-loved BBC sit-com needed to come to an end in the new New Years Day documentary

"I called Ruth and was like, 'I wonder if we could trick everybody into thinking that, for the first six or seven minutes, that they're just going to watch a wedding that's between Nessa and Smithy'," said co-creator, James Corden.