There's more in Rotherhithe (5)
I believe the answer is:
other
'there's more' is the definition.
I can't judge whether this defines the answer.
'in rotherhithe' is the wordplay.
'in' indicates a hidden word.
'OTHER' is hidden within 'rotherhithe'.
Can you help me to learn more?
(Other definitions for other that I've seen before include "Different; additional" , "Throe (anag)" , "Very unusual" , "else!" , "Remaining" .)