There are many sites and sources of information (and debate) about the receipt of UK state pensions in Canada. For some reason Canada is one of a number of countries where, despite being a member of the Commonwealth, your UK state pension will be frozen once you start to receive it. In essense, this means that the UK state pension you receive when you begin to draw it in Canada will not be subject to periodical increases as it would if you lived in the UK (or a number of other countries such as Spain). There are many websites and lobby groups discussing the apparent injustice of this policy but being aware of it before you decide to live in Canada at least gives you the choice as to whether or not it is acceptable to you.
Once living and working in Canada you can also opt to maintain National Insurance contributions back in the UK to ensure that, when you reach pensionable age, you will be entitled to draw a full state pension rather than a reduced amount calculated according to the years of contributions you made while working in Britain. For full details on the UK state pension and the ramifications of living and drawing your pension abroad visit HM Revenue & Customs.
For an overview of your Private Pension options please click here for a related article by UK Pensions Transfer specialist Andrew Filice of Investors Group, Canada.