This is mentioned in Stewart Lee's introduction for the recent reissue of Tonks's novel The Bloater and he says that it's online, but I can't find it.
From the Hampstead home I stalked her ghost to, Tonks and her husband hobnobbed with late fifties and sixties literary London neighbours, and in the mid-sixties Notes on Cafés and Bedrooms and Iliad of Broken Sentences established her as a poet to watch. She collaborated with the nowadays fully feted Delia Derbyshire of the BBC Radiophonic Workshop, the post-war state-subsidised avant-noise research outfit that famously gave us that iconic Doctor Who theme, on a sound-poem, 1966's 'Sono-Montage'. It's not officially available but you can source it illicitly if you poke around online, in all its received pronunciation/analogue electronica glory, and experience an all-too-brief corduroy-whiff of the golden age of the kind of transporting cutting-edge taxpayer-funded out-there art that would make the current Culture Secretary Nadine Dorries shit hot porridge into a hat.
The below picture is from the second edition of Bedouin of the London Evening.