Thanks for that.
I will look into it a bit more.
I'm unsure as the background in this photo is not at the Manor, where the other photos were taken. Also there is a photo of a lady, man and boy with the same background, they do not appear to be in the theatrics, and at this time they were living in Portsea, not at the manor in Toddington.
I found a record of a Captain G Tosland in the Bedfordshire Militia 1859, but I don't think this uniform/costume is from there.
Unsure if the assumption this photo was also in theatrical dress up is correct.