| RefNo | Title | Date |
| IM/GA/WS/4150 | Ratcliffe, John Ashworth | nd |
| PB/9/2/3/11/20 | Personal references and appointments: R | |
| PB/1/33/3/6 | Companion of Honour | 1965 |
| RR/61/48 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'Studies of region E of the Ionosphere' by J E Best, F T Farmer and John Ashworth Ratcliffe | October 1937 |
| RR/57/102 | Referee's report by William Henry Eccles, on a paper 'Experimental investigations of very long waves reflected from the ionosphere' by J E Best, John Ashworth Ratcliffe and Maurice Vincent Wilkes | [May 1936] |
| RR/70/200 | Referee's report by Phillip Ivor Dee, on a paper 'A study of the interaction of radio waves' by John Ashworth Ratcliffe and I J Shaw | 1947 |
| RR/72/36 | Referee's report by Edward Victor Appleton, on a paper 'Diffraction from an irregular screen with applications to ionospheric problems' by H G Booker, John Ashworth Ratcliffe and D H Shinn | 1949 |
| PB/1/33/1/8 | Nobel Prize | 1948 |
| IM/GA/WRS/8669 | Ratcliffe, John Ashworth | nd |
| PB/1/33/2 | Correspondence concerning the Copley Medal of the Royal Society | 1956 |
| EC/1951/20 | Ratcliffe, John Ashworth: certificate of election to the Royal Society | |
| RR/41/7 | Referee's report by William Henry Eccles, on a paper 'Some simultaneous observations on downcoming wireless waves' by Edward Victor Appleton and John Ashworth Ratcliffe | April 1930 |
| RR/65/48 | Referee's report by Thomas Lydwell Eckersley, on a paper 'Further investigations of very long waves reflected from the ionosphere' by Kenneth George Budden, John Ashworth Ratcliffe and Maurice Vincent Wilkes | December 1938 |
| RR/79/28 | Referee's report by John Ashworth Ratcliffe, on a paper 'A fundamental revision of the theory of the interaction of radio waves' by L G H Huxley | 3 March 1953 |
| RR/79/39 | Referee's report by John Ashworth Ratcliffe, on a paper 'Electric currents in the ionosphere. II. The atmospheric dynamo' by W G Baker | 14 March 1953 |
| RR/79/85 | Referee's report by John Ashworth Ratcliffe, on a paper 'Direction-finding studies of large scale ionospheric irregularities' by E N Bramley | 11 May 1953 |
| RR/79/27 | Referee's report by John Ashworth Ratcliffe, on a paper 'Experimental studies of the motions of slow electrons in air with applications to the ionosphere' by R W Crompton, L G H Huxley and D J Sutton | 3 March 1953 |
| RR/79/100 | Referee's report by John Ashworth Ratcliffe, on a paper 'Reflexions from irregularities in the ionosphere' by G H Munro | 16 May 1953 |
| RR/79/38 | Referee's report by John Ashworth Ratcliffe, on a paper 'Electric currents in the ionosphere. I. The conductivity' by W G Baker and David Forbes Martyn | 14 March 1953 |
| RR/79/87 | Referee's report by John Ashworth, on a paper 'Electric currents in the ionosphere. III. Ionization drift due to winds and electric fields' by David Forbes Martyn | 19 May 1953 |