You need to buy a transformer (to change the voltage from 240 to 100-120V), and an adapter, as UK plugs have a 3 prong, and I think Canada, like the US, only have typically 2 prong flat parallel, though some high voltage appliances like computers and monitors have 3 prong (2 prong flat parallel and 1 ground round prong).

You're better off buying those devices in Canada, as it will be alot cheaper than getting them here in the UK. I found that out the hard way!

 

According to me you need buy converter which allow you to plug your electronic stuffs. You can get the converter easily in the Canadian market.