Ainsdale
Aughton Road
Bidston Dee Junction
Bidston East Junction
Birkdale
Birkenhead Central
Birkenhead North No 1
Birkenhead North No 2
Bootle Junction
Brook Hall Road
Duke Street
Eccles Crossing
Freshfield
Hall Road
Hightown
Hoylake
James Street
Leasowe
Maghull
Moreton
New Brighton
Portland Street
Rock Ferry
Southport Station
Town Green
Walton Junction
Waterloo
West Kirby
Not all closed on the same date.
I refer you to <http://www.railwaycodes.org.uk/signal/signal_boxes0.shtm>.
Hope this helps,
Phil