This photo shows one of the early models of the postwar British MC bomb - the Mk2 500lbs bomb (very similar in design to the US extended tail cone GP bombs)
(1953 is already post Korean war, but there are similar photos from 1952 with the 77th squadron meteors in Korea)
Here you have from left to Right the first generation of postwar Brtish bombs:
Tallboy bomb (12000 Lbs) - Mk2 Bomb (500 Lbs) - Mk4 bomb (1000 Lbs) - WE.177 Thermo Nuclear bomb (400 Kt)
The development of the extended tail cone indeed began as soon as the combat reports of the F84 in Korea
Concerning their date of introduction in service, it shortly followed the last step in their development: the establishment of their bombing tables
Bombing Table for 100-lb. G.P. Bomb AN-M30A1 with Fin Assembly M135 1/2/1955
Bombing Table for 250-lb. G.P. Bomb AN-M57A1 with Fin Assembly M126 13/1/1954
Bombing Table for 500-lb. G.P. Bomb AN-M64A1 with Fin Assembly M128 19/1/1954
Bombing Table for 1000-lb. G.P. Bomb AN-M65A1 with Fin Assembly M129 23/7/1957
Bombing Table for 2000-lb. G.P. Bomb AN-M66A2 with Fin Assembly AN-M116A1 or M116 4/2/1952
From these data, we can see that only the AN-M66A2 could come into the frame of the Korean war, but there is no report or photograph supporting that.
The design of the M117 began in the wake of the Korean war but no M117 were used in this conflict.
In the early 1950s, the M117 was still known as the T54 Demolition Bomb and the M118 as the T55 Demolition Bomb.
The T54E2 appears as being tested at the Aberdeen proving groiunds in March 1953.
There is a document from 1958 dealing with the metallurgical testing and penetration performance of the 750lb T54E3 demolition bomb (first series production model), after some doubts arose about the production batch of 60,000 of such bombs - the contract is mentioned as dating from early 1954.
The T54 designation still appears in the US documents from 1960 - meaning that it was still considered by then as under development.
M117 model numbers are given in documents from at least 1965 on. By 1968 or so it was the M117A1, then by 1970 the M117A1E2.
The Mark 80 series used a shape known as Aero 1A, designed by Ed Heinemann of Douglas Aircraft as the result of studies in 1946, but did not see service before the Vietnam War.
The NAVPERS 10826 from 1952 does not mention any of these bombs but only ww2 era bombs
None of them appear on the SAC of the F84B , C and D from 1950 nor on the SAC of the F84D and F84E from 1951
The extended tail cone series and the M117 appear on the SAC of the F86F and F86H from 1956 and of the F84F Thunderstreak of 1957
They appear in the NAVWEPS OP 2216 from 1960