2023 UK PLAB 1 slot

I passed PLAB 1 on march 2020. However I could not sit the PLAB 2 before PLAB 1 becomes invalid. I will re-sit the PLAB 1 again in 2023. My IELTS is also invalid now.
Could anyone tell me whether there is any PLAB 1 slot in UK 2023? I could not see the booking details for I do not have a valid IELTS result.
Thanks a lot.