This is general information about these kinds of policies from the SunLife website. This is the company that seems to do most advertising on daytime TV.
Cons
You'll need to pay every month for a set amount of time – you usually pay each month up to a predetermined date, after which the premiums stop, but the cover continues. With some over 50s insurance providers, you pay each month until you die. Some providers offer options to stop paying earlier but may reduce your payout as a result. Be sure to check the details of your plan before you commit.
Waiting period – because insurers don’t ask you any medical questions, they make you wait a period of time before they will payout in full. This waiting period is typically 12 months but can be much longer with some insurers.
You can't miss payments – if you stop paying in the early years of your plan then typically your cover will end, and you won’t get back the money you’ve paid in. Some insurers will allow you to stop paying after a set period, others will allow you to reduce payments or even take a payment holiday.
You could pay in more than the payout – depending on how long you live, you could pay more in premiums than the cash payout. For example, if you took out an over-50s life insurance policy at age 50 and paid £20 a month for £6,000 of cover, you’d have paid more than the cash payout if you live more than 25 years.
You need to check with the provider what they will allow and what the penalties might be.