Does anyone know if the false floor for the FL estate will fit in a FL hatch ?

A pointless question ?

If both types are the same length, then I'd see no reason why not. Can't see Skoda making more parts than need be TBH.

Which, upon checkin, are. (4572)

It's a three part fitting. The top (folding floor) is same for both. The supporting sides are different. I think the estate sides are taller or shorter to suit the estate but otherwise the same as the hatch.

If you get one handy, I'd say it will fit, but if you are buying new obviously the dealer will supply the correct sides. If I ever get round to it, I always think I'll make my own with a bit of ply.

HTH