Door Closers
Decent volume here Gareth …
Search volumes
door closure (6,100)
fire door closures (1,300)
door closures (800)
automatic door closure (800)
fire door closure (600)
internal door closure (300)
concealed door closure (200)
Top sites:
https://www.screwfix.com/c/security-ironmongery/door-closers/cat840234
https://www.toolstation.com/ironmongery/door-closers/c242