Other than the film soundtrack album, In 1974/1975 The Wombles made four studio albums, all of which went gold in the UK. Here is an excerpt from an Amazon review of the 4 CD Box Set (2022):

Album 1: WOMBLING SONGS is a neat introduction with the TV Version of the theme 'The Wombling Song'. It also has the pop hit 'full version' that reached no. 4 in the UK Singles Charts.
Album 2: REMEMBER YOU'RE A WOMBLE has a fab array of songs. Some noticeable standouts are the UK Chart no.3 'Remember you're a Womble' 'Minuetto Allegretto' 'Banana Rock' (Enjoyably Quirky) and 'Wellington Goes to the Waterloo' (I dig the instruments arrangements on this one!)
Album 3: KEEP ON WOMBLING reached no. 17 in the UK Album Charts. Like all the Womble albums the songs, they are storytelling. Some highlights are 'The Orinoco Kid' 'Womble of the Universe' and 'Hall of the Mountain Womble'.
Album 4: SUPERWOMBLING is the final 'Pop Group' studio album. One of my all time favourite Womble track is 'Superwomble'. I just love the arrangements on this and Super hero lyrics. This song only reached no. 20 in the UK Charts! It should have been higher. Standouts for me are 'Wombles on Parade' and 'Nashville Wombles'.
Of course these are my favourite standouts. Other listeners will have theirs.