Can someone provide advice please

[Wickerman]

I have recently moved house.it appears the shower drain has become blocked and there is no inner cup to remove and clean. I believe the waste is a Coral shower part E6704 as in my pictures. My question is does this part unscrew to enable me to pull it out to gain access to clean the waste and pipe properly and then screw it back in. Does anyone have instructions or diagram for this part. I have found very little on Internet searches.

 

[ShaunCorbs]

Should lift up you might need to use something to start it moving like a piece of plastic or wood as not to damage the tray don’t unscrew

 

[Wickerman]

Should lift up you might need to use something to start it moving like a piece of plastic or wood as not to damage the tray don’t unscrew

Thanks for your reply