getting a job in Canada

My family and I are all british and we put in our migration paperwork some 8 months ago. My wife is a fully qualified hairstylist/barber with 20 years experiance, I am just leaving the Royal Air Force Police after serving 22 years. I was a Counter Intelligence/Security Specialist. I have looked on some sites and it would appear that if we had firm job offers we may get our application processed faster; I have noted from CIC that the average waiting time for UK is between 40 - 50 months.
My question is two fold: Will canadian employers risk offering employment to a uk citizen prior to their arrival?
How do we get job offers? I have look on WorkoPolis/Monster with not much luck.
P.S. We are considering settling in the Niagera region of Ontario. Any assistance would be appriciated