Work in Westminster

Select Committees 

  • Environment, Food and Rural Affairs Select Committee, 2020 - Present 

  • Environmental Audit Committee, 2019 

  • Work and Pensions Select Committee, 2018 - 2019

  • Health Select Committee, 2018 - 2019

  • Science and Technology Select Committee, 2015-17

The committees, to which MPs are elected by their peers at the start of the new parliament, exists to ensure that Government policy and decision-making is based on expertise advice and evidence. .

All Party Parliamentary Groups (APPGs): 

All-Party Parliamentary Groups (APPGs) are cross-party groups formed by MPs and Members of the House of Lords who share a common interest in a particular policy area, region or country.

While they are not official parliamentary committees these groups can be influential because of their non-partisan, bicameral approach to an issue.

Office holder for:



  • Member of the Minimum Unit Pricing of Alcohol Group
  • Member of the Great South West Alliance

To view Derek's activity in Parliament, including speeches and voting in parliament, please click here. Alternatively, to view Derek's official Parliamentary page, please click here.


PM given mandate to take negotiations back to Brussels

MPs have given the PM a clear mandate to return to Brussels to address the issue of the backstop. I have consistently said that I believed a withdrawal agreement could secure the support of enough MPs if concerns over the backstop could be addressed.

Fact and fiction in the smart meter roll-out

West Cornwall MP Derek Thomas has sponsored an event in Westminster at which MPs and civil servants were able to find out what is fact and what is fiction with regard to smart meters.