Would Not Like To See Too Many English Troops Ready To Invade Caen At The Drop Of The hat such as in scenario in old nap game. The English had to rent troop transports for periods of 3 to 6 months, particularly colliers which the hurt the coal industry as well...revenue and tax revenue lost. That meant they had to do a lot of advance planning and really could only move small numbers of troops at a time.
Also, as an aside, England cancelled landings in pomerania due to captains refusing the Baltic after mid October (also why Russians wanted malta so bad and a sore point between Russia and britain...they wanted warm water ports in winter and britain held on to malta.