From the ‘Ewan MacColl Music’ site at Bandcamp...

”This site is maintained by the MacColl family, aiming to make Ewan's catalogue available to download.
Ewan MacColl is known to most as a songwriter and singer, but he was also of significant influence in the worlds of theatre and radio broadcasting. His art reached huge numbers through the folk clubs, greater numbers through his recordings and untold millions through the radio.”

There’s a link to ‘Contact Ewan MacColl’ on the page - might be useful to get the information from Ewan’s family about the legal/copyright status of his songs?

https://ewanmaccoll.bandcamp.com/