Alternative theatres rely on getting specialist treatment here? (6,6)
I believe the answer is:
harley street
'specialist treatment here?' is the definition.
The definition suggests a singular noun which matches the answer.
'alternative theatres rely on' is the wordplay.
'alternative' indicates anagramming the letters (an alternative ordering of the letters).
'on' says to put letters next to each other.
'theatres' put after 'rely' is 'relytheatres'.
'relytheatres' with letters rearranged gives 'HARLEY STREET'.
'getting' is the link.
Can you help me to learn more?
(Other definitions for harley street that I've seen before include "London thoroughfare famed for medical specialists" , "private health here" , "London thoroughfare famed for doctors" , "On which many doctors" , "London thoroughfare noted for medical specialists" .)