Bill Gates opened the DFID building on Friday.

The Bill and Melinda Gates Foundation is a real force for good. The work that is being done to vaccinate children in the developing world thanks to the Foundation is phenomenal.

And the new (well – adapted and refurbished) No 22 Whitehall is a much better and more modern environment in which to work. Not only that – the move is nearer to parliament and is a great deal cheaper than the building we moved from.