Driver door central locking faulty

Hi,

I've a Skoda Roomster 2011. Central locking works by key fob for all doors except the drivers door. The drivers door locks manually by key alone, also locking other doors as normal. More recently, the drivers door no longer operates any electric windows, though these work from their own respective controls on each door. I'm not sure these issues are related. From looking on this website, I gather the electric windows might be broken wiring or need a replacement loom which seems a fairly common problem.

My query is regarding the central locking issue. Is this likely to be a solenoid, perhaps? Any advice gratefully received. 

Thank you.

Ross