Yes. If you decide to leave Canada and live elsewhere, you may want to collapse the RSP that now holds the pension monies. This can be done but requires careful tax planning and is likely to incur substantial investment and other fees.
If you cease to be a Canadian resident for tax purposes (e.g. you leave the country for a substantial period of time) in the first five full UK tax years after a UK pension is transferred to a QROPS in Canada, HMRC will assess a Foreign Transfer Charge (FTC) of 25% of the initial amount transferred. The same applies if you transfer to a non-registered plan or to a QROPS in another country.
After the 5 years have expired there is no FTC. You should most likely only consider bringing a pension to Canada if you intend to retire in Canada.
On reaching retirement age, many UK pension plans allow withdrawals of up to 25% of the value of the plan. These amounts are not taxed in the UK. If your plan remains in the UK but you are a Canadian resident, all payments from the plan are taxable in Canada. If you transfer the plan to Canada the monies remain sheltered from tax until you make a withdrawal. All withdrawals are taxable in Canada. Depending on how your plan in Canada is invested and how well these investments perform, over time, the tax on 25% of its transfer value should be offset by higher growth compared to leaving the plan in the UK. However, there are no guarantees.