Until there is a complete restructuring of the political system we arent going to notice when these useless cretins are working or bunking off.
I've said for years that with the exception of the PM and Deputy PM, MP's should not be in the cabinet. It should instead be filled in the same way a successful business fills its vacancies. By recruiting people with the relevant qualifications and/or experience for the role and not be given out as a either a sop to prevent someone throwing their dummy out of the pram like Gordon or for toadying.
Plus you can either do one important demanding job well or a make piss poor effort at 2 of them at the same time.