England and Wasps lock Simon Shaw has been called onto the British & Irish Lions tour of New Zealand as a replacement for the injured Malcolm O'Kelly.
The Irishman was ruled out after suffering a recurrence of an old groin injury in training on Wednesday.
The Lions' medical team had hoped he would recover but an Auckland-based specialist confirmed on Thursday that the injury was worse than they had thought.
The Lions turned to Shaw, who was called into the England World Cup squad as a late replacement for Danny Grewcock, ahead of other possible candidates Brent Cockbain and Robert Sidoli of Wales.
Shaw said: ''I am absolutely delighted but feel for Mal and wish him well in his recovery.
''It is a great honour to be involved with the Lions, and to be honest it is all just sinking in but it will be fantastic to get out there and I am looking forward to the challenge that we will face in New Zealand.''
England Under-18 head coach John Fletcher insists his young side will be better for the experience after beating Italy in the bronze final to round out their 2015 Rugby Europe U18 Championship campaign in style.