Canada is a big draw for British expats of all ages. This spectacular country is known for being welcoming to people from all over the world, and in many cases has no language barrier for Brits. The quality of life is high, and the cost of housing lower than in the UK.
However, you will need to factor in the fact that your UK state pension will be frozen on the day you leave, and you will need some health insurance if you want to replicate the sorts of things that are available for free on the NHS.