[1] Thomas graduated from Richmond Theological College and was a minister at Wesleyan Methodist Church.

[3][4] Thomas became known for his involvement in the Bobby Newlove case, a famous proxy séance sitting with Leonard.

[5] Thomas defended the direct-voice medium Leslie Flint, despite the fact that other members from the SPR suggested he was fraudulent.

[6] He also defended the fraudulent spirit photographer William Hope from charges of fraud from Harry Price.

Thomas received criticism from psychical researchers for this and his statements about the Hope-Price case were rebutted by the SPR in 1924.