Hilton Hotel's plugged by English districts (8)
I believe the answer is:
parishes
'districts' is the definition.
(parish is a kind of district)
'hilton hotel's plugged by english' is the wordplay.
'hilton' becomes 'paris' (I can't justify this - if you can you should give a lot more credence to this answer).
'hotel's' becomes 'h's' (phonetic alphabet: alpha, bravo, charlie etc.).
'plugged by' indicates putting letters inside (plug can mean to block up a gap).
'english' becomes 'E' (abbreviation).
'hs' going around 'e' is 'hes'.
'paris'+'hes'='PARISHES'
Can you help me to learn more?
(Another definition for parishes that I've seen is " Local subdivision of a diocese".)