In a manner of speaking, State view stops some British people running here (5,3)
I believe the answer is:
irish sea
'stops some british people running here' is the definition.
The definition suggests a singular noun which matches the answer.
'in a manner of speaking state view' is the wordplay.
'in a manner of speaking' becomes 'irish' (I am not sure about this - if you are sure you should believe this answer much more).
'state' shows a homophone (sound like) (I've seen 'stated' mean this).
'view' becomes 'see' ('see' can be a synonym of 'view').
'see' sounds like 'sea'.
'irish'+'sea'='IRISH SEA'
Can you help me to learn more?
(Other definitions for irish sea that I've seen before include "Main" , "It separates us from Britain" , "Water to west of England" , "Water around Isle of Man" , "Man's situation" .)