'Quidnunc' was the British part of the Anglo-Norwegian operation to cut the telephone cables connecting the UK and German-occupied Norway (1/2 June 1940).

The cables extended between Newbiggin and Peterborough to shore installations in western Norway. The vessels involved were five minesweeping trawlers (Milford Queen of the 10^th Minesweeping Group, James Lay of the 11^th Minesweeping Group, Cape Melville and Milford Princess of the 12^th Minesweeping Group and the unattached Clothilde) escorted by the sloop Weston. The vessels departed the Tyne river for the operation, and at its end proceeded to Yarmouth.