'TM' (i) was the designation of British convoys (together with a numerical suffix) plying the route between the Tyne river and Methil on the north coast of the Firth of Forth, and as such reciprocals of the 'MT' (i) series (February/April 1940).

The first of these 'Tyne to Methil' coastal convoys was TM.1 of 3/4 February 1940 with an unknown number of merchant vessels escorted by the light warships of the 1^st Anti-Submarine Group, and the last was TM.40 of 7/8 April with two merchant vessels including the 1,557-ton Norwegian Selvik.