Hi Carole, that's him, excellent spot. Another variation in spelling of the surname. Strange though, when searching for Gilbert in 1891 on Ancestry I entered him as 'McKichen' but made sure to also click on the 'Sounds like', 'Similar' and 'Soundex' options in order to cast my net as far as possible. The census entry you have found didn't show, or at least I don't remember it showing.
Gilbert must have left the slate industry - as quite a few others were at this time it seems - to seek more dependable work elsewhere. Thank you for solving my query. I now have a more accurate date for my photograph.
Regards
Doddie