To be fair, we all say things in error, that sound idiotic after the event. You obviously have a lot on your plate, and got mixed up. If you ever say anything that is incorrect when talking to an insurance company, you have to call them back asap and tell them you gave out incorrect information, otherwise a simple mistake can snowball into something else.

My advice, call them back and amend what you said. They're not mind readers, and the onus is on us, the claimant, to make sure the information we give them is correct to the best of our knowledge. Seriously, you have to call them back because once they refuse, things will get a lot more difficult and it can also means your policy can be voided because the information you told them across the phone may or may not differ from the information you gave them when talking out the policy.

I agree - call them back to set the record straight. 
People get confused when stressed. 
If you didn’t have a cancer diagnosis when the policy was taken out there shouldn’t be a problem. 
The last thing they will want is you complaining to these people … www.financial-ombudsman.org.uk/.../critical-illness-cover

I agree - call them back to set the record straight. 
People get confused when stressed. 
If you didn’t have a cancer diagnosis when the policy was taken out there shouldn’t be a problem. 
The last thing they will want is you complaining to these people … www.financial-ombudsman.org.uk/.../critical-illness-cover