[UK] Have you received Marshmallow OTA?

So for various reasons I won't go into I'm not able to flash Marshmallow in flashtool. I'm also unsure about the carrier status of the Lollipop firmware I flashed to return to stock, and therefore unsure about OTA status.

If you're in the UK, have you received the OTA? Also, what carrier are you on?

Thanks :)