Eh up Yorkshire Lass,

Yes, this is a sensitive issue here. Does your husband have legal guardianship or has he adopted your son?
One of my colleagues has recently gone through this with Immigration, and it takes a lot of time and a lot of paperwork.

The company which has offered your hubby a job should be able to offer advice on this also.

Hope it is all sorted, would be good to see some fellow Yorkshire folk out here!

Cheers,
Northernlad