Sam Freedman is a top substacker and a Senior Fellow at the Institute for Government.

Sam and Lawrence Freedman write at https://samf.substack.com/ . It's one of the few UK politics sources I follow closely and I'd recommend it.

The interactive graph we we made is here: https://estimaker.app/_/nathanpmyoung/uk-politics-freedman

If you'd like me to interview someone, let me know.