Employer Medical Insurance

Hello My employer provides corporate medical insurance and what I know is that they tax it at source so I don't get a p11D. I was able to get one off cash back through the insurance (to be clear I didn't make any original payments myself towards any health costs so I made essentially a 'profit'). Is this classed as income and do I have to pay tax on it? Thank you on advance.

Hi,
The answer to this question is no.
Thank you.