The marriage is on lancashireopc
http://www.lan-opc.org.uk/Search/indexp.html11 Apr 1931 at All Saints, Toxteth
Albert Henry Evans age 35, occ Police Constable, Widower, abode 24 Beaumont Street
Lillian Willan age 28, Spinster, abode 24 Beaumont Street
Groom's Father Charles Evans, occ Ex Prison Officer
Bride's Father Henry Willan, occ Retired Railway Official
Witnesses Frank Noel Evans, Margaret Willan & Sarah Jenkins