29 Years: John Adamson (Edinburgh 1623–1652),[261] Sir James Donaldson (St Andrews 1886–1915).
28 Years: Ellen Charlotte Higgins (Royal Holloway 1907–35), Thomas Roberts (Aberystwyth 1891–1919).
27 Years: Sir Isambard Owen (Armstrong College, Newcastle 1894–1909, Bristol 1909–21), John Stirling (Glasgow 1701–28).
[265] 22 Years: Sir David Brewster (St Andrews 1837–59), Sir Thomas Holland (Imperial 1922–29, Edinburgh 1929–44), Lord Stopford (Manchester 1934–56), Dame Margaret Tuke (Bedford 1907–29), Edward Wright (Glasgow 1662–84).
21 Years: Bill Bevan (Cardiff 1966–87), Henry Charteris (Edinburgh 1599–1620),[261] Geraldine Jebb (Bedford 1930–51), Sir Edward Ross (SOAS 1916–37), Tim Wheeler (Chester 1998–2019), David Green (Worcester 2003–present), David Latchman (Birkbeck 2003–present).
19 Years: Lord Chilver (Cranfield 1970–89), Michael Driscoll (Middlesex 1996–2015), Thomas Edmonds (Aberystwyth 1872–91), Anthony Kelly (Surrey 1975–94), John Lee (Edinburgh 1840–59),[261] Sir Oliver Lodge (Birmingham 1900–19), Sir Fraser Noble (Leicester 1962–76, Aberdeen 1976–81), Gerald Pillay (Liverpool Hope 2003–22), Sir Michael Sterling (Brunel 1990–2001, Birmingham 2001–09), Frank Thistlethwaite (East Anglia 1961–80), Sir Ralph Turner (SOAS 1937–56), Raymond Rickett (Middlesex 1972–91), George Holmes (Bolton 2005–present).