Matthew Lewis hits the red carpet for the European premiere of his latest film

The powerful romantic tear-jerker Me Before You was aired in London and Matthew was expected to attend the premiere, along with his co-star Emilia Clarke, who is known to millions as Daenerys Targaryen in Game Of Thrones.

Matthew's character is the long-term boyfriend of Louisa, played by Emilia Clarke. Also starring is Sam Claflin, who built up a worldwide fanbase as Finnick in the cinema blockbuster The Hunger Games. Others expected to attend the premiere were Brendan Coyle, Jenna Coleman and Samantha Spiro.

Matthew, who grew up in Horsforth, shot to fame as a child actor playing Neville Longbottom in the Harry Potter movies. He has gone on to forge a successful career as an adult actor, playing major parts in Happy Valley, The Syndicate and Bluestone 42.

Me Before You also stars Oscar nominee Janet McTeer, Charles Dance, Stephen Peacocke, Vanessa Kirby and Ben Lloyd-Hughes.

Based on the critically-acclaimed, bestselling novel by Jojo Moyes, the film was directed by renowned theatre director, Thea Sharrock.

Matthew said: "Patrick is Lou’s boyfriend of about seven years, and it’s comfortable, you know?

"He’s also a personal trainer and is obsessed with fitness. He’s set up his business and he’s won this local entrepreneur of the year award twice, and that’s just spurred him on to get fitter and fitter. Now, he’s planning to do this Viking triathlon in Norway as his and Lou’s holiday together.

"In his mind, and probably hers at one point, they’re going to stay in this town for the rest of their lives, get married, get a house, have kids and everything’s going to be okay.

"When Will comes into her life, suddenly her eyes are open to the possibilities and opportunities in the world outside of this town... and outside of Patrick."

Part of Claflin’s transformation to Will included losing more than three stone because the character’s immobility over two years would have naturally induced muscle loss.