With the renumbering of local Malvern area services on Monday 7th January 1935, Service 367 running between Great Malvern (Belle Vue Terrace) and Wyche Cutting became Service M17.
At the same time, Service 377 was renumbered to Service M27. This was the primary local service running over the same route between Great Malvern and Wyche Cutting, and then continuing to Colwall Green, with Service M17 being a short-working variation.
By the mid-1950s, almost all Winter Season journeys to Wyche Cutting operated as the longer Service M27 to Colwall Green, or Service 477 to Ledbury and Hereford, with only one morning Service M17 return journey operating on Mondays to Saturdays. During the Summer Season, additional journeys between Great Malvern and Wyche Cutting were provided by Service M21, which continued to British Camp.
The sole Service M17 journey was withdrawn as part of a general network revision that came into effect on Saturday 6th January 1968.
| M | 1 | 7 |
| New January | 1935 | Great Malvern ↔ Wyche Cutting | |
| June | 1957 | Great Malvern ↔ Wyche Cutting |