Callan Davies, 16, Rainham Mark grammar school, Kent; Charlotte Geater, 16, Northgate high school, Ipswich; Dan Hitchens, 17, Winchester College; Alice Howlett, 17, St George’s school for girls, Edinburgh; Annie Katchinska, 16, St Dunstan’s college, Kent; Laura Marsh, 17, Redborne upper school, Bedford; Emily Middleton, 16, The King’s school, Macclesfield, Cheshire; Isobel Norris, 17, Swansea college; Richard O’Brien, 16, Bourne grammar school, Lincolnshire; Julia Rampen, 17, James Gillespie’s high school, Edinburgh; Charlotte Runcie, 17, St Albans high school for girls, Hertfordshire; Adham Smart, 14, Dartford grammar school, Kent; Tess Somervell, Ninestiles school, Birmingham; Emily Tesh, 17, North London collegiate school; Flora Thomas, 12, Port Regis school, Shaftesbury, Dorset