The voluntary code, announced at Birmingham's National Exhibition Centre, is designed to provide greater transparency in dairy contracts.

BBC: Cows at NEC show

The authority's assets also include the Symphony Hall, the National Exhibition Centre and the International Convention Centre (ICC).

BBC: Birmingham City Council ?200m short to pay equal pay bill

He then transferred to the Abu Dhabi National Exhibition Centre, where he first held a bilateral meeting with Sheikh Abdullah Bin Zayed Al Nahyan, Foreign Minister of the United Arab Emirates.

UN: Secretary-General