 The full British complement was Frank Smythe, Eric Shipton, Jack Longland, Eugene Birnie, Percy Wyn-Harris, Edward Shebbeare, Lawrence Wager, George Wood-Johnson, Hugh Boustead, Colin Crawford, Tom Brocklebank, E. Thompson and William Maclean, with Raymond Greene as senior doctor and William 'Smidge' Smyth-Windham as chief radio operator.The highest point attained on this attempt was 8,570 m (28,116 f), but the route was found to be too difficult and the vital camp V that should have been reached on a rare day with fair weather – 20 May – was, as a result of disagreements between team members, never established.It was during this expedition that Wyn-Harris found the ice axe which belonged to Andrew Irvine, who had disappeared on the peak on the with George Mallory.