QGIS - add OS NGD API - Tiles as a vector layer (ASAP)

I'm in need of a quick solution for a project involving QGIS on a Windows system.

Here's what's required:

- Familiarity with QGIS software and its vector layer functionalities.
- Expertise in adding vector layers via URLs.
- Fammliarity with the OS NGD API – Tiles, vector tiles service
- Proficiency with Windows OS.

Understanding of GIS systems, particularly QGIS on Windows would be especially fruitful.

You would be required tell me:

1. how to load an OS NGD Tiles - API vector tile service as a vector layer and if possible, using the 27700 CRS.
2. how to apply the correct styles

Further info:

I have been making good use of QGIS and found the help files able to get me through most problems, although now I am completely stuck at trying to get the "OS NGD API - Tiles" vector tiles layer loaded into QGIS.

QGIS is unable to connect to the service, suggesting it is a simple formatting error of the URL but I am none the wiser.

I have managed to add many other layer types such as the free "OS Vector Tile API" with a style url. It looks good but is low detail.

Has anyone had any success adding the NGD vector tiles layer and if so, how have you managed it?

I am trying to use this URL with the project key appended to it:

https://api.os.uk/maps/vector/ngd/ota/v1?key=

Ideally I'd be able to use this and a styles URL and configure with 27700 CRS but have not had any luck. I have managed to get the NGD URL to work via the OS Code Playground but not QGIS.

Thanks for considering my project!