This just in* from a bit of Hansard that Carter-Ruck have not tried to injunct:

Mr. Grieve: To ask the Secretary of State for Justice how many hours were worked by each special adviser in his Department in each week between 8 June 2009 to 3 July 2009.

Mr. Straw: As working for me as a Special Adviser is, I am told, pure pleasure and stress free, my Special Advisers work exceptionally long hours, often at weekends and late into the evening without complaint, and have not therefore felt the need which they otherwise might to complete timesheets to show that I was sweating their labour.

*Paddy from Grayling was the tipster co-conspirator.