Green MSP Alison Johnstone called for local produce to be the default choice for public food procurement.

BBC: School meal

Mr Ban has also extended the work of the Procurement Task Force, likewise set up in the wake of the oil-for-food scandal, to investigate allegations of fraud in procurement deals.

ECONOMIST: The United Nations

She insisted providers adhered to stringent "procurement policies and procedures for sourcing and ensuring quality control of food products for school menus".

BBC: Iceland boss blames councils over 'poor meat quality'

The Hospital Caterers Association (HCA) says procurement legislation requiring managers to select the lowest bidder can constrain the provision of good food.

BBC: 'No consistent standards' in hospital food