Once he had arrived in England, Warren presented the Admiralty with a new scheme for an invasion of New France which he had planned out with Shirley. However, the Admiralty noted they could not undertake the scheme and have enough ships to maintain the ongoing British blockade of French ports; instead, they ordered Warren to lead an eight-ship squadron to reinforce the occupation of Louisbourg. However, they soon ordered him to take his flagship Devonshire and join a fleet under George Anson in the Bay of Biscay, which was cruising in the area for French warships.
