Fly-half prospect Marcus Smith has signed his first senior professional contract with Harlequins.

The 18-year-old from Brighton was named in Eddie Jones' England squad for the autumn Tests earlier this season as an 'apprentice' player, having enjoyed an outstanding campaign in Quins' number 10 shirt.

The Aviva Premiership club announced that Quins academy product Smith, a former Brighton College student, has agreed a long-term deal.

"I am delighted to have secured Marcus' long-term future at Harlequins," Quins rugby director John Kingston said.

"Marcus is an intelligent and humble young lad who is very focused on his rugby. He has the talent and abilities to take this Quins side forward on to the next stage of its development.

"He is the type of player and person that perfectly embodies the Harlequins spirit and culture we are building at The Stoop."

Smith, who could be part of England boss Jones' NatWest 6 Nations training plans this term, added: "Harlequins is a fantastic club, and they have looked after me extremely well since I joined three years ago.

"The club is incredibly ambitious, and combined with John Kingston's long-term vision, it made the decision much easier knowing the faith and guidance he has shown me.

"As a player, you want to be playing in the big games, and hopefully if I can keep improving I will be involved in more and more of them and help the club progress both domestically and in Europe."