Former Watford manager and current England Under-21 boss Aidy Boothroyd will join the senior squad at the World Cup.

The 47-year-old traveled to Russia with Gareth Southgate's side on today as England continue to integrate their age-group coaches at different levels.

Boothroyd's involvement had been planned for a while, before he guided England Under-21s to a third successive Toulon Tournament title at the weekend.

He will not join the coaching set-up in Russia, with England due to play their World Cup opener against Tunisia in Volgograd next Monday.

England Under-15 head coach Justin Cochrane joined Boothroyd in Toulon this year, while Under-20 head coach Paul Simpson was with the Under-21s during Euro 2017.

Southgate and his assistant Steve Holland also travelled to Poland to see Boothroyd and his squad last year.

The England Under-21s are five points clear at the top of Group 4 in their campaign to reach Euro 2019 in Italy and San Marino with four games remaining.

They beat Mexico 2-1 on Saturday to win the Toulon title after previous victories in 2016 and 2017.

Boothroyd has impressed since taking over leadership of the Young Lions in 2016, having previously been in charge of the Under-20s and Under-19s.

He spent three years at Watford and guided the Hornets to the Premier League with a 3-0 victory over Leeds United in the Championship play-off final in 2006.

Watford were relegated from the top flight the following season and Boothroyd’s tenure eventually came to an end by mutual consent in November 2008.