A group of local councils in England is formally asking the government for new powers to tax large supermarkets.
BBC News has learned that Derby City Council has called for the right to bring in a new levy as a "modest" effort to ensure supermarket spending "re-circulates" in local communities.
Some 19 other local authorities back the so-called "Tesco tax", which could raise up to £400m a year.
The government said additional taxes on supermarkets would push up food prices.
A similar tax already operates in Northern Ireland and Scotland.
http://www.bbc.co.uk/news/business-28495631