Leaving it late

An Accountant referred a 74-year old to me in February. After a deal of procrastination, they are now keen to arrange their Pension income?with 3 weeks until they reach 75. Why is this crucial?

Source: http://www.lse.co.uk/blogs/expert/resident-ifa-blog/yoiqvj/

nhs pension pension forecast pensions uk iht annuity rates