Until 1992 only the South African Rugby Board (as affiliated members of the IRB) could award Springbok colours or Test status for rugby.

In 1985 they named a team of "Springboks" for a short internal tour after their projected Tests against an incoming team from New Zealand were cancelled.

They did not recognise the matches as carrying full Springbok status and official colours were not awarded to the players who took part in the matches.

As a result the following names are omitted from the official list of South African rugby representatives: Dolly Ntaka, Wilf Cupido, Calla Scholtz, Wessel Lightfoot and the former Ireland and British/Irish Lions scrum-half John Robbie.

Which international Test players have attended Rugby, Eton and Harrow? John Howe, Ireland

In terms of numbers Rugby lead the way and have done since the first international match staged in 1871. There were ten Old Rugbeians in the first England side that faced Scotland - more than Eton and Harrow combined have contributed to England fifteens in the 140 years since.

By the mid-1920s Rugby had produced nearly fifty England rugby internationals, including four of the national side's most distinguished captains: Fred Stokes (captain for the first international in 1871); Vincent Cartwright (skipper against the Original All Blacks of 1905); Adrian Stoop (captain in 1910 when Twickenham opened and England won the Championship for the first time since 1892); and Ronnie Poulton (later Poulton-Palmer) who led the 1914 side to back-to-back Grand Slams.

Micky Steele-Bodger is probably the best-known post-war England international produced by Rugby School. He was a flanker in the early post-war England sides. The school has also produced Scottish, Welsh, Irish and even South African Test players.

Of the great 19th century Public Schools Marlborough College and Cheltenham College were the next most prolific in providing England with international players in the first fifty years of Test rugby. Uppingham, Bedford School, Tonbridge, Clifton College, Haileybury and Wellington College also supplied England with many international rugby players.

Eton and Harrow have produced more British Prime-Ministers than Test rugby players. The game at Harrow was not formally established until 1927. Austin Podmore, a knowledgeable correspondent on schools rugby, told readers of The Rugby Football Annual in 1928: "[My] article should not close without mention of an important event - Harrow's second adoption of the Rugby game, this time on the right lines."

Even so, Harrovian A N ("Monkey") Hornby, who captained England at both rugby and cricket, was capped in the early days of international rugby and two other alumni, James Gowans (Scotland) and Willoughby Hamilton (Ireland), were honoured before 1900. Peter Ryan (England) and Gurth Hoyer-Millar (Scotland) were capped in the 1950s and more recently Gareth Rees (Canada) and Damian Hopley (England) played World Cup rugby.

Eton College took up rugby in 1911 and before the Great War the school was playing fixtures with Wellington and Radley. Not all school connections of international rugby players are known, but to date the only Etonian who appears to have been capped for England is I J (later Sir James) Pitman who played on the left-wing against Scotland at Twickenham in 1922.

Stephen Jones pulled out of the recent England-Wales match at Twickenham shortly before kick-off. Has there been a later team change before a Test? Paul Stephenson, England

The latest change to a Test line-up occurred before the France-Scotland Five Nations opener in January 1969. Jean Salut, the blond French flanker, was injured running out on to the Stade Colombes pitch in Paris. He had earlier twisted his ankle in the changing room and was given a pain-killing injection. Then, as he ran out, he went over on the ankle on the steps leading up from the tunnel to the pitch and fell heavily.

The French completely reorganised their scrum before the kick-off. Salut was replaced by a prop (Jean Iracabal) who specialised on the loose-head. The selected loose-head (Jean-Michel Esponda) crossed the scrum to tight-head, tight-head prop (Michel Lasserre) went into the second-row and Benoit Dauga moved back to Number Eight, displacing Walter Spanghero who moved to take up Salut's position on the side of the scrum.

So there were five French pack changes between leaving the dressing room and lining up for the anthems. As the rugby correspondent of the Observer, Clem Thomas, told his readers next day: "Only the French would make a change of such complexity."