<P> Gavin & Stacey is an award winning British television comedy series , following the lives of the title characters Gavin ( Mathew Horne ) and Stacey ( Joanna Page ) , who , before marrying , live on opposite sides of the country , Gavin in Billericay , Essex , and Stacey in Barry , Vale of Glamorgan . During the first two series Gavin lives with his parents Mick ( Larry Lamb ) and Pam ( Alison Steadman ) but in the third series he has moved , with Stacey , to Barry and lives with Stacey 's mum . He has a best friend Neil `` Smithy '' Smith ( James Corden ) . For most of the episodes Stacey lives in Barry with her mum Gwen ( Melanie Walters ) , with an extended family of Uncle Bryn ( Rob Brydon ) across the street , and best friend Vanessa Shanessa `` Nessa '' Jenkins ( Ruth Jones ) , but for a short while during series two she lived with Gavin , Pam and Mick in Essex . </P>
who plays stacey 's mum in gavin and stacey
Melanie Walters