Inflate a price to tour England's capital (6)
I believe the answer is:
aerate
'inflate' is the definition.
(I've seen this in another clue)
'a price to tour england's capital' is the wordplay.
'price' becomes 'rate' (I've seen this before).
'to tour' is an insertion indicator (to tour can mean to go around).
'capital' indicates taking the first letters.
The first letter of 'englands' is 'e'.
'a'+'rate'='arate'
'arate' placed around 'e' is 'AERATE'.
(Other definitions for aerate that I've seen before include "Oxygenate" , "Ventilate" , "Send out, broadcast" , "Turn from still to sparkling" , "Fill with bubbly gas" .)