the best route is to go through a broker who specialises in medical conditions. Lifesearch is a large broker which does this (I have no personal connection to them). Or look for a website called unbiased.co.uk which has lists of independent advisers.
If your diabetes is well controlled with few complications you should be able to get cover, although you will need to pay an additional premium.
Hi
Check your pension if you snuff it whilst in service as i have always relied on that as back in the day life insurance was ridiculously expensive.
I,m 56 and 50 years a type 1 in good shape and hba1c of 39.
With all the advancements in tech recently theres no reason to think your life expectancy is shortened.
I presume you mean mortgage protection insurance. My husband and I took this out many years ago. I had to have a medical before being insured but it all went well. I can't remember who paid for the medical (done privately in our local health centre). I presume it was us who paid.
The best thing to do is shop around.