| 100% | CLEGG | 5 | Nick —, Leader of the Liberal Democrats from 2007-15 |
| 71% | CAMPBELL | 8 | Menzies —, leader of the Liberal Democrats from 2006-07 |
| 71% | FARRON | 6 | Tim —, leader of the Liberal Democrats from 2015-17 |
| 68% | CABLE | 5 | Vince —, former MP for Twickenham; Leader of the Liberal Democrats from 2017-19 |
| 62% | CLEGG | 5 | Nick —, Liberal Democrat leader from 2007-15 |
| 58% | CLEGG | 5 | Nick —, Liberal Democrat leader from 2007-2015 |
| 57% | DAVIDSTEEL | 10 | Leader of the Liberal Party from 1976-88 |
| 57% | JEREMYTHORPE | 12 | Leader of the Liberal Party from 1967-76 |
| 56% | CABLE | 5 | Vince —, MP for Twickenham and Leader of the Liberal Democrats since 2017 |
| 54% | BEITH | 5 | Alan —, 1973-2015 MP for Berwick upon Tweed; 1992-2003 Deputy Leader of the Liberal Democrats |
| 54% | DAVID | 5 | & 15D Leader of the Liberal Party from 1976-88 |
| 52% | HARMAN | 6 | Harriet —, Leader of the House of Commons from 2007-10 |
| 52% | STEEL | 5 | David —, leader of the Liberal Party from 1976-88 |
| 52% | GRIMOND | 7 | Jo —, leader of the Liberal Party from 1956-67 |
| 46% | STEEL | 5 | David —, 1976-88 leader of the Liberal Party |
| 46% | CABLE | 5 | Vince —, MP for Twickenham from 1997-2015 and 2017-2019; Leader of the Liberal Democrats from 2017 to 2019 |
| 43% | NEILKINNOCK | 11 | Leader of the Labour Party from 1983-92 |
| 42% | MACLEOD | 7 | Iain —, Leader of the House of Commons from 1961-63 |
| 42% | MASSASOIT | 9 | Leader of 15-Across, who attended the Pilgrims' celebration |
| 41% | SHAH | 4 | Leader from the House of Pahlavi |
| 40% | ROBZOMBIE | 9 | Director of the 2007 remake of 15-Across: 2 wds. |
| 39% | ROBIN | 5 | & 20D Labour MP who served as Leader of the House of Commons from 2001-03 |
| 39% | PELOSI | 6 | Nancy —, Speaker of the US House of Representatives from 2007-11 |
| 39% | HEALEY | 6 | Denis —, 1980-83 Deputy Leader of the Labour Party; Chancellor of the Exchequer from 1974-79 |
| 38% | ROY | 3 | & 1A Deputy leader of the Labour Party from 1983-92 |
| 38% | FOOT | 4 | Michael —, leader of the Labour Party from 1980-83 |
| 38% | GAITSKELL | 9 | Hugh —, leader of the Labour Party from 1955-63 |
| 38% | BANKIMOON | 9 | Secretary-General of the United Nations from 2007-16 |
| 38% | BURKE | 5 | Robert O'Hara —, leader of the first expedition across Australia from south to north who died in 1861 |