Hi Paul if it’s like my 8th gen saloon it’s very easy.
If you lay the back of the seats flat there is 1 bolt in the centre of the seats at the back towards the boot.
Also there are 2 plastic clips at the front of the 2 main seat panels underneath.
Go careful with these as there easy to snap.
Once uncliped just lift the hole seat out.
I had this out last year to change the petrol fuel filter.