| 1910 | [A winter plumaged adult seen at Telscombe Cliffs (ES) on 4 January (Walpole-Bond III p273-5) has been rejected (see 1932 record below).] | WB dFH |
| 1911 | [An adult shot at St. Leonards (ES) on 24 March.] | WB HR |
| [An adult seen at Rye (ES) for over a week in July.] | WB HR |
| 1913 | [An adult male shot at Cooden, near Bexhill (ES) on 2 March.] | WB HR |
| 1915 | [An adult male seen at Rye (ES) in early May was seen between there and county boundary several times before being shot at Jury's Gap (ES) on 25 June.] | WB HR |
| 1917 | [An adult male shot at Broomhill (ES) on 13 July.] | WB HR |
| 1932 | [A summer plumaged adult past Hove on 9 August (Walpole-Bond III p275) has been rejected (BOURC 1993a. Eighteenth Report of British Ornithologists Union Records Committee (December 1992). Ibis 135:220 and Vinicombe, K. and Hopkin, P.J. 1993. The Great Black-headed Gull in Britain. British Birds 86:201-5).] | WB dFH |