Hi,
I have the same issue so I contacted the management company.
There response was that they are unable to allocate visitor car parking until the residents that are parking outside the apartment blocks use their allocated spaces in the underground car park.
They told me that they will once everyone is parking correctly be able to see what spaces above ground can be changed to visitor spaces.
They said they will 'take in to consideration the allocation of additional visitor’s spaces. There are a few visitors’ spaces in the car park and visitors spaces on the surface area beside the Walk and the Crescent. These spaces will be marked out when the yellow lines are installed.'
I can't say that they management company were very helpful with this and I am unable to get in touch with the residents association to see if they have any other information either. It does seem that Oak House has no visitor spaces but new spaces were recently made outside of Beech House and Laurel House.
Hopefully something will be sorted soon or at least some information can be passed on to the residents!!