I recall someone enquiring about 11 OTU Course 28 with regard to their Grandfather in one of the missing posts last December. I found a photograph of my Father with other personnel on Course No. 22 at 11 OTU Bassingbourn in the National Archives file AIR29/644, date range 1 Jan 1940 Ė 31 May 1942, 11 OTU Westcott and Oakley. 11 OTU went to Westcott and Oakley after Bassingbourn hence the photos turning up in this file. My Fatherís photograph is dated 6 Jan 1941 so Course 28 should be in this file.