You are still a Canadian PR, do don't qualify for any type of visa or permit.
Since you were removed from Canada as a minor, and now want to return around age 19, you have a valid H&C reason to keep your PR status even though you don't meet the Residency Obligation. The older you get after age 19-20, the less chance there will be to qualify for this H&C excuse.
So you need to apply for a PR TD from the UK.
http://www.cic.gc.ca/english/information/travel-document/
In the application, include details that you were removed at 9 yrs old, and now want to return. The PR TD will be approved allowing you to fly directly to Canada, and once in Canada you can immediately apply to renew your PR card.
Do you know if you got a Social Insurance Number (SIN) back in 2007? If yes, then you will just need to re-activate it. If not, you may face difficulty to get one until you get your new PR card. You can't work until you have an active SIN.