
1) Town in Merseyside
Found on
https://www.crosswordclues.com/clue/birkenhead

seaport in the metropolitan borough of Wirral, metropolitan county of Merseyside, historic county of Cheshire, England, on the Wirral Peninsula ... [1 related articles]
Found on
http://www.britannica.com/eb/a-z/b/68

Seaport and industrial town in the Wirral, Merseyside, England, opposite Liverpool on the Wirral peninsula, on the west bank of the Mersey estuary; population (2001) 83,700. It developed as a shipbuilding town with important dock facilities, but other principal industries now include engineering and flour-milling. The Mersey rail tunnel (18...
Found on
https://www.encyclo.co.uk/local/21221

a seaport in Merseyside metropolitan county, in W England, on the Mersey River opposite Liverpool. 135,750.
Found on
https://www.infoplease.com/dictionary/birkenhead
No exact match found.