<P> In addition to its main characters , Last Tango in Halifax features a regular supporting cast . Nina Sosanya plays Caroline 's romantic partner Kate , who she decides to marry over the course of the series . Gerard Gilbert of The Independent describes the relationship between the couple as `` one of the most normalised lesbian relationships ever shown on the small screen . '' Nina Sosanya noted that she enjoyed filming with Sarah Lancashire and that the pair would `` giggle a lot like completely juvenile idiots '' whilst filming their love scenes . Other characters introduced in the first series include Caroline 's husband John ( Tony Gardner ) and his lover Judith ( Ronni Ancona ) , Gillian 's brother - in - law , Robbie ( Dean Andrews ) , and Paul ( Sacha Dhawan ) , a youth with whom Gillian has a sexual relationship . Josh Bolt plays Gillian 's son Raff , whilst Edward Ashley and Louis Greatorex play Caroline 's teenage sons William and Lawrence . The second series expanded the families of Alan and Celia . Timothy West appears as Alan 's brother Ted whilst Gemma Jones plays Celia 's sister Muriel . The third series later introduces Rupert Graves as Gary , who is revealed to be Alan 's illegitimate son , and Michelle Hurst as Kate 's mother Ginika . </P>
<P> In addition to its main characters , Last Tango in Halifax features a regular supporting cast . Nina Sosanya plays Caroline 's romantic partner Kate , who she decides to marry over the course of the series . Gerard Gilbert of The Independent describes the relationship between the couple as `` one of the most normalised lesbian relationships ever shown on the small screen . '' Nina Sosanya noted that she enjoyed filming with Sarah Lancashire and that the pair would `` giggle a lot like completely juvenile idiots '' whilst filming their love scenes . Other characters introduced in the first series include Caroline 's husband John ( Tony Gardner ) and his lover Judith ( Ronni Ancona ) , Gillian 's brother - in - law , Robbie ( Dean Andrews ) , and Paul ( Sacha Dhawan ) , a youth with whom Gillian has a sexual relationship . Josh Bolt plays Gillian 's son Raff , whilst Edward Ashley and Louis Greatorex play Caroline 's teenage sons William and Lawrence . The second series expanded the families of Alan and Celia . Timothy West appears as Alan 's brother Ted whilst Gemma Jones plays Celia 's sister Muriel . The third series later introduces Rupert Graves as Gary , who is revealed to be Alan 's illegitimate son , and Michelle Hurst as Kate 's mother Ginika . </P>
who plays gary in last tango in halifax
who plays gary in last tango in halifax
Rupert Graves
Rupert Graves