What is offshore pensions investment?
Onshore pensions usually bundle insurable benefits such as payments on death or disability together with pension fund contributions for tax reasons. Offshore, there is no point in doing this, and pension investment means simply building up a secure, tax-efficient fund which can be distributed when and where you want it in future.
Buying deferred annuities is another way of achieving a pension goal. This is obviously very secure, but the rates of return assumed by the annuity purchase are unlikely to be attractive to the average offshore investor. Insurable benefits can be bought separately wherever they are cheapest.