Hi there
Are you hoping to go permanently or would a temporary work permit be better ? One takes several years the other can take several weeks if you have a clean record and don't need a medical (nurses, Dr's etc)

I have just successfully gone through the temporary work permit route and although complicated at times it saved me the £4500-£8000 i was quoted from immigration specialists. That said other people have really rated them.

The Canadian high commission website offers a vast amount of info and you need to determine which route you want to take.

It took 6 weeks to get our work permit but my husband had already secured a job and had a positive Labour Market Opinion.

Good luck
Louise