Josie66 - Why not just ask for it? These things shouldn't be a secret.
Perhaps you need to talk to Health and Wellbeing, or whatever label your Trust's Occupational Health is wearing at the moment.
Edited to add: I just Googled the following, and returned loads of results from many Trusts, many dated July 2020, so in our COVID times: , I hope "nhs return to work covid risk assessment template shielding"
I didn't look at any of the documents, but there should be some useful stuff in there.