On the road to Doctor Who but in the shadow of Quatermass, "The Big Pull" - a lost six part BBC serial - has been be retold by TV historian Michael Seely, accompanied by footnotes of what few facts we know of its production

https://michaelseely.substack.com/p/the-big-pull-part-one

Illustration Robert Hammond which appears in A Message From the Stars: The A for Andromeda Story - https://shop.saturdaymorningpress.co.uk/product/a-message-from-the-stars-the-a-for-andromeda-story