The trio made 2 LP's for Decca. "Country Session" Decca LK4627 released in 1964 with Malcolm, Carol and Mick...I think this album was recorded by R.G.Jones in Morden.   The 2nd was Decca LK4665 "Way Down Town", recorded at the Decca West Hampstead studios in Oct. 1964, with yours truly added on banjo. This 2nd. album was released in 1965.
Malcolm also made several albums later on other labels, as both a solo artist and with other guest musicians. I'm not sure of his total output. To my mind, the recording that best captured the sound of the original trio was that made at a live performance in the Mayfair Hotel in Oct. 1963 and issued on Ember ep's.