Found the following entries in The National Archives online.
1775 Apr 15
Philip Stephens. Have given directions for the transports, in which the 22nd, 40th, 44th and 45th Regiments of Foot are to embark for New York, with all possible speed and are sending copies.
1775 May 5
Philip Stephens. Mr. Foxworthy, Naval Officer at Kinsale informs us that on the 24th April the transports Argo, Spy and Seville arrived at Cork and the Three Sisters arrived on the 25th, to take on board part of the 44th and 45th Regiments of Foot to go to Boston. They parted company with the rest of the transports soon after leaving the Downs. The 44th Regiment has arrived at Cork, the 40th and 45th are marching there and the 22nd Regiment is at Kinsale. The transports with Regiments for Boston sailed on April 28th