Thank you Pete, I fully understand and appreciate you taking the time to reply.
Pusscatsmum, looking at Pete's link it looks like someone has to be earning less than £100 per week after money has been taken off for expenses to qualify for Carers Allowance. It seems so unfair when your hubby is juggling book keeping from home with his caring responsibilities.
I would like to thank the moderators of this forum for their endless patience and giving up so much of their time to help with information.