About us

The Groceries Code Adjudicator is the independent regulator ensuring that regulated retailers treat their direct suppliers lawfully and fairly.

Christine Tacon is responsible for monitoring and encouraging compliance with and enforcing the Groceries Supply Code of Practice (the Code).


  • The GCA has adopted a modern regulatory approach, working collaboratively with the retailers to respond to issues raised by suppliers and others and bring about beneficial change in sector.
  • The GCA can launch investigations where there is a suspicion that one or more retailers have breached the Code. The GCA can also arbitrate in disputes between retailers and suppliers.

Who we are

The Groceries Code Adjudicator Act, which created the GCA, came into force on 25 June 2013. The statutory review carried out by the Department for Business, Energy and Industrial Strategy found in 2017 that the GCA is regarded as an exemplary modern regulator with an international reputation.

The GCA is funded by a levy on the regulated retailers with UK annual turnover of more than £1 billion.

The GCA encourages suppliers, trade associations and other representative bodies to provide her with information and evidence about how the large retailers are treating their direct suppliers. All information received is dealt with on a confidential basis and the GCA has a legal duty to preserve anonymity.

Suppliers are also urged to undertake training in the Code and to follow latest developments and GCA announcements. The GCA produces a regular newsletter and publishes a wide range of information on the GCA website, including case studies, key documents and best practice statements.

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