Watch: Comedian and activist Mark Thomas on search for Miners' Strike kids choirpublished at 09:49 British Summer Time 13 April 2016
Comedian and political activist Mark Thomas grew up in South London, but was a student at Bretton Hall College in Wakefield during the Miners' Strike of 1984-1985.
Now, he's back in West Yorkshire to find a group of primary school pupils who sang as the miners marched back to work - a very emotive memory for him.
Where you there? Mark wants to hear from you. If you think you can help, you can contact Mark, external as he'd love to hear from you. Here he is to explain more: