Thank you again, Nigel.
I have listed the Thomas Christians aged 20-25 in the 1841 census and there are only 2 who are listed as "Lab". There is one in Bride and one in Ramsey. There are two others in Ramsey but I have found them in 1851 and they are not relevant to my family.
I will ask a researcher to look up your other suggestions and thank you again for taking the time to help. I'm very grateful.
Incidentally, Thomas's daughter Esther Jane married a Peter Corkhill. Any relation to you?
Eileen