Annie B

Hello all. Has anyone added a glass sunspace ( pergola with glass roof and sides) to a barn conversion under class Q. It doesn't have walls or insulation so I'm hoping it can be regarded as an enclosure, not an extension or room. Am reading up on as much info as I can and it would seem that permitted development would have been removed and restricted if an 'article 4' was placed on the planning approval or title deeds. I have no such recorded restriction. I suppose am talking myself into going ahead with it! Just wanted to check if anyone else had successfully done this. Many thanks