Self Assessment Question on Employment benefits and expenses

Hi, I do not have the P11D form from my previous employer to answer the question on employment benefits and expenses. However I know the only taxable benefit I had was private medical insurance. I don't know how much this was and an amount has already been pre-populated in the form for me. Is this sufficient or is there anywhere else I should look up to fill in this information accurately?

Hi Penny T,
As it is pre populated, you can accept it.
Thank you.