Can you drive in Ontario with a UK license?

Yes. Visitors can drive in Ontario with a valid UK licence for up to 3 months.

Ontario lets visitors drive on a valid licence from their own country for up to 3 months (the official pages say "3 months"; 90 days is an approximation). Carry your licence whenever you drive, and make sure the vehicle is insured and has a valid permit. If your visit will last longer than 3 months, you need an International Driving Permit issued in the UK before you arrive: you cannot get one after arriving in Canada. These rules are for visitors only; if you move to Ontario, the 60-day new resident rules apply instead.

Drive in Ontario: visitors (ontario.ca)Official MTO driver's handbook: getting your driver's licenceO. Reg. 340/94: Drivers' Licences (Highway Traffic Act)

Not for the first 3 months. An IDP is required for visits longer than 3 months, and it must be issued in your home country before you arrive.

For visits up to 3 months, your valid UK licence is enough on its own. For visits longer than 3 months, Ontario requires an International Driving Permit from your own country, obtained before arrival: Canada does not issue IDPs to visitors.

Drive in Ontario: visitors (ontario.ca)Official MTO driver's handbook: getting your driver's licence

You can drive on your existing licence for 60 days after becoming an Ontario resident. After that, you need an Ontario licence.

The 60-day clock starts when you become an Ontario resident, not when your visa or permit was issued. Once an Ontario licence is issued, you must use it and can no longer drive in Ontario on your UK licence. Some required documents can take weeks to obtain from the UK, so start gathering them before you move or as soon as you arrive.

Exchange an out-of-province driver's licence (ontario.ca)Official MTO driver's handbook: getting your driver's licenceO. Reg. 340/94: Drivers' Licences (Highway Traffic Act)

Yes. The UK has a licence exchange agreement with Ontario: with 2+ years of full-licence experience you exchange directly for a full class G licence, with no knowledge or road test.

Anyone exchanging a licence takes a vision test. With more than 2 years of full-class driving experience in the last 3 years, you receive a full class G licence with no road test. With less than 2 years, you receive a class G2 licence and take the G road test once your total experience reaches 24 months (experience from other jurisdictions can be combined). The licence can be expired for less than one year at the time of application. The exchange covers car licences only, not motorcycle or commercial classes. Both Great Britain and Northern Ireland appear on Ontario's exchange list, so licences from anywhere in the UK qualify. Your UK licence is surrendered when the Ontario licence is issued. If you have misplaced the physical licence, DriveTest accepts a DVLA Certificate of Entitlement issued within the last 6 months instead.

Exchange an out-of-province driver's licence (ontario.ca)Licence exchanges for cars, trucks and vans (DriveTest)O. Reg. 341/94: Driver Licence Examinations (Highway Traffic Act)

Vision test only, if you have 2+ years of experience. With less than 2 years you get a G2 and take one road test later; no knowledge test either way.

Because the UK is an exchange jurisdiction, the written knowledge test is waived. Everyone takes the vision test at the DriveTest centre (bring corrective lenses if you wear them). A road test is only required if you have under 2 years of full-licence experience: you drive on a G2 until your combined experience reaches 24 months, then take the G road test.

Licence exchanges for cars, trucks and vans (DriveTest)O. Reg. 341/94: Driver Licence Examinations (Highway Traffic Act)

No. UK licences are issued in English, so no translation is needed.

Ontario only requires a translation when a licence is not in English or French. UK photocard licences are in English, so this requirement does not apply.

Exchange an out-of-province driver's licence (ontario.ca)Licence exchanges for cars, trucks and vans (DriveTest)

Bring your original licence, ID with legal name and date of birth, proof of driving experience, a translation if needed, and the fees. Apply in person.

Apply in person at any DriveTest centre or at the ServiceOntario Bay and College location in Toronto. Original documents related to driving experience (abstracts, authentication letters, translations) are retained by DriveTest, so photocopy anything you want to keep before your visit. Some documents can take weeks or months to obtain from abroad, so start early.

Exchange an out-of-province driver's licence (ontario.ca)Licence exchanges for cars, trucks and vans (DriveTest)