Life Insurance with CLL Diagnosis

Hi all,  I have been on watch and wait with CLL for 10 years.  I am now 54.  At my last 3 monthly appointment it was suggested i need to start considering what sort of treatment i may need in the future.  I would like a life insurance policy that would pay enough for my mortgage to be cleared on my death.  £88K.   Any advice most welcome.  Thank you