Watford - Southampton left-back Ryan Bertrand was the only absentee as England trained on Wednesday for the first time since manager Roy Hodgson named his 23-man squad for Euro 2016.
Bertrand was present at Watford's London Colney training base, 27 kilometres (17 miles) north of London, but sat out the session to undergo treatment on a knock.
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He is set to miss England's final pre-tournament warm-up game against Portugal at Wembley on Thursday, but Hodgson said that his fitness was not a major concern.
"It's not a serious injury," Hodgson told a press conference at England's team hotel in Watford. "We're pretty confident he'll be fit to play Russia (on June 11)."
England travel to France for the Euro on Monday and will face Russia, Wales and Slovakia in Group B.