Otherwise taking tea round pensioners' home (7)
I believe the answer is:
chelsea
'pensioners' home' is the definition.
The definition suggests a singular noun which matches the answer.
'otherwise taking tea round' is the wordplay.
'otherwise' becomes 'else' (synonyms).
'taking tea' becomes 'cha' (cha is a type of tea. I am not sure about the 'taking' bit.).
'round' indicates putting letters inside.
'else' inserted within 'cha' is 'CHELSEA'.
Can you help me to learn more?
(Other definitions for chelsea that I've seen before include "Bunny" , "Kind of bun that's flat" , "West London area" , "Part of our capital" , "Hillary Clinton's daughter" .)