(The only Oxbridge website I have found with details of blues is that of the Oxford University Association Football Club. Other information is from John Cornwell's book.)
Alec Russell — Captain of the School, triple Cambridge Blue, Corinthian and Amateur International (see Jul 40 magazine)
Harold Thompson — Trinity College, Oxford, football blue 1928/29
D Parker — Cambridge, football blue 1934/35 (reported in Dec 34 magazine)
Philip Rhodes — Captain of the Cambridge University A.F.C.
G. R. Gilfillan — Wartime Blue, Cambridge University A.F.C. (both reported in Dec 41 magazine)
J. E. COOPER — Lincoln College, Oxford, Half-Blue for Water Polo (reported in 1948 Speechday leaflet)
David Law — Brasenose College, Oxford; Half Blue for Cross-Country Running, Colours for running in the Relay Race against Cambridge, Half Blue for Athletics (reported in 1950 Speechday leaflet); awarded Full Blue for Athletics; England, Great Britain, British Empire colours (1952 Speechday leaflet)
G. T. EDWARDS — Brasenose College, Oxford; Half Blue for Water Polo; Captain of O.U.W.P.C. (reported in 1951 Speechday leaflet)
Leonard Hunt — Balliol College, Oxford, lacrosse half-blue 1953
Peter Higgins — Balliol College, Oxford, lacrosse half-blue 1952, 1953
Peter Fletcher — Worcester College, Oxford, football blue 1954/55
Ian J G Marshall — Keble College, Oxford, football blue 1955/56 (d 07/08/1985)
David P Allen — Sidney Sussex College, Cambridge, Athletics blue 1958/59, 1959/60
Geoff Heritage — St Edmund Hall, Oxford, football blue 1959/60
Richard Nosowski — Queen's College, Oxford, football blue 1962/63, 1964/65
Frank Parker — St Peter's College, Oxford, football blue 1963/64, 1964/65
Michael Wosskow — St Edmund Hall, Oxford, football blue 1968/69
John Richardson — Gonville & Caius College, Cambridge, football blue 1969/70
David A Smith — Keble College, Oxford, football blue 1974/75, 1975/76, 1976/77
Lacrosse - Norman Adsetts; Swimming - Frank Parker, Bill Abbott, Barrie Cheetham (60s); Rugby - Alan Johnson, St Edmund Hall c 1972 (all Oxon)