The government's recent spending review could open up opportunities for integrating ethics into public procurement.

Let's not forget the lessons that Delhi has taught us. We'd do so at the peril of all the workers involved in our big event - and all the ones to come.

The Channel 4 Dispatches programme ‘Fashion's Dirty Secret' (8 November) exposed the unacceptable working conditions endured by some of the people who make clothes for the UK high street.