After reading the sleeve notes for “Lots of oil” on Yelp! by the Mrs Ackroyd Band I went looking for the letter of T.E. Lawrence to The Times in July 1920 that is mentioned. It appears an archive of his papers is available at http://telawrence.net/ with the texts of his out-of-copyright writings available and in that I found his letter to the editor, The Times, 22 July 1920. I also found a later editorial in the Sunday Times (22 August 1920) which has a rather topical quote:
The people of England have been led in Mesopotamia into a trap from which it will be hard to escape with dignity and honour. They have been tricked into it by a steady withholding of information. The Bagdad communiquÃ©s are belated, insincere, incomplete. Things have been far worse than we have been told, our administration more bloody and inefficient than the public knows. It is a disgrace to our imperial record, and may soon be too inflamed for any ordinary cure. We are to-day not far from a disaster.