Inspector Welch

In the short story Greenshaw's Folly, Inspector Welch is the investigating officer in the Miss Greenshaw murder case.

Portrayals
In the 2013 ITV adaptation of Greenshaw's Folly, Inspector Welch is portrayed by John Gordon Sinclair. As a policeman stationed near St. Mary Mead, he already knows Miss Marple well. He tells her he and his colleagues had been having a sweepstake on when she would next turn up at the station.