@Disp0sable I think you would be better off complaining to the NHS directly, rather than going down the planning route, but if you, or anyone else, wants to submit some sort of objection/representation, then the following may be of use to you.
This is an application for Advertisement Consent, which has a much more limited assessment scope. These applications only consider the impact of the proposal on the visual amenity of the area and any impact on public safety.
Being on the roof, the public safety element is going to be nil, especially as the flagpole is already in-situ.
Visual amenity is basically how it looks on the building and any impact on the surrounding area, particularly in the case of listed buildings, conservation areas, and notable or protected views. This is a prominent site, directly opposite the Palace of Westminster, and the flag could be viewed from the River and from bridges and roads around the site. The flag does not actually advertise anything, nor is is related to the use of the premises, it is a political statement, and considering its location this feels inappropriate. Would an EU flag, a pirate flag, or a Black Lives Matter (or any other flag that requires express permission!) be considered appropriate here? If not, why not, and why are these flags different?
In terms of the actual proposal, there are two points that I would seek clarification on, and push back on:
- The application states that the flags will be alternated, but no details are provided as to how often this will be? (I may have missed this, but it's something that I'd want to know.)
- It is proposed to use knitted polyseter as the flag material. This is basically the cheapest flag material you can get, and it is consequently not particulrly durable, with the print likely to soon fade, and the flag to quickly look tatty. Knitted polyester is not a traditional, nor a high-quality material and is therefore not in keeping with its setting.
That may or may not help you, but if you want any more info let me know.