'HP' was the designation of Allied convoys (together with a numerical and sometimes a literal suffix) plying the route from the heel of Italy to Piraeus, Greece, and as such reciprocals of the 'PH' series (October 1944/March 1945).

The first of this 'Heel to Piraeus' series was HP.1 of 24/27 October 1944 Taranto with the 846-ton British Empire Faun, 716-ton British Empire Roach, 1,942-ton Polish Lewant, 7,219-ton British Samdak, 7,219-ton British Samdaring, 7,210-ton British Samfaithful and two British commissioned vessels in the form of LST-33 and the South African-manned salvage vessel Salvestor.

The last was HP.X which departed Taranto on 9 March 1945 with three British vessels in the form of the 7,190-ton Fort Kullyspell, 7,134-ton Fort Lawrence and 5,969-ton Stanhill.