Despite captaining Wales U20 level, England and Harlequins back-rower Alex Dombrandt would not have been eligible to represent the reds senior side.
Qualifying as a resident student at a Welsh university, he had no birth, family or residency qualifications to play for Wales at Test level.
The blockbusting back-rower scored a hat-trick of tries over the weekend as defending champions Quins rounded off a memorable year by beating Northampton 41-27 in the English Premiership.c
Other players to play for both, but don't feature on this list, include current Wales stars Callum Sheedy and Johnny Williams.
#1. Stuart Barnes
Although born in Essex, he was to captain Wales Schools. However, Barnes made his England debut against Australia in November 1984. He gained ten caps for England and played his last international match in 1993 against Ireland.
2. Nick Tompkins
Now an exciting centre, his rugby career began in the forwards as a flanker before he moved into the midfield in his mid-teens, representing Kent at county level and London & South East Under-16s.
Tompkins’ dynamic skillset and enthusiastic nature saw him excel for the Men in Black in 2018/19, featuring heavily in the club’s run to their third European success and fifth Premiership title.
The former England Under-20 international, who won the 2014 Junior World Championship, made his Wales debut during the 2020 Six Nations
3. Billy and Mako Vunipola
Mako Vunipola, far-right in the back row, and Billy, fourth right, played for East Wales schools alongside Wales’s Taulupe Faletau. However, after attending English schools they made the switch to represent England. Billy even once admitted he wanted Australia to win the 2003 Rugby World Cup.
4. Ross Moriarty
The hulking back-rower, whose father is former Wales international Paul Moriarty, initially played for England at both U18 and U20 level, winning the IRB Junior World Championship in 2014. However, he has since made his full international debut for Wales and has since won 44 caps while also representing the British & Irish Lions during their tour of New Zealand in 2017.
5. Harry Randall
Grew up in the Amman Valley and captained Wales U16s. But was born in Slough and switched allegiance to the land of his birth, playing for England U20s. The 22-year-old scrum-half made 17 Premiership appearances last season, having joined from Gloucester.