If you want to stay for a year, the best visa to apply is this one:
http://www.canadainternational.gc.ca/united_kingdom-royaume_uni/experience_canada_experience/index.aspx?view=d and make sure you apply soon before they run out of places for this year. It gives you a 1 year open work permit which means you can work for any or many employers.
Other options are far less flexible. If you even qualify to apply for PR directly without a job offer, it takes at least a year or two for the PR processing. If you want to get a regular work permit, you would first need to find an employer and that employer must show that they could not find a qualified Canadian for the job.
I don't know if your driving offense would be in issue. I don't think so.