Basically what Jaime said. There are whole record companies dedicated to reissuing a lot of Radiophonic and related music, or new music heavily influenced by early 1970s UK TV music, like the the Focus Group, Belbury Poly, and the Advisory Circle on their Ghost Box label, and artists like Pye Corner Audio, Warrington-Runcorn New Town Development Plan, and many others. There's the Delaware Road project, with a graphic novel, albums, and live events about an alternate world equivalent of the Radiophonic Workshop.
And to keep this relevant to Doctor Who for more than just the Radiophonic connection, this whole scene has considerable overlap with a retro UK folk scene inspired by folk horror like The Wicker Man, so there are some projects that have electronic and folk elements, like A Year in the Country (blog, albums, books, etc) and the Black Meadow (albums, books). "The Daemons" is often mentioned among the key influences in this whole set of subgenres, which is sometimes called hauntology, though that includes other things as well.