[web]https://www.bbc.co.uk/news/magazine-19463119[/web]
I've seen one place that sold them - but they stopped a few years back.
This is why you are fat

‘Britain’s biggest’ Christmas sandwich contains one kilo of Turkey
21 Dec 2012
The monster treat, which was created by chef Richard Hollis, is served beside a container of cranberry sauce and a large helping of stuffing. If that wasn’t enough, which it really should be, the enormous butty also comes with a 450g Christmas pudding and a huge pint-and-a-half serving of tea.
With the amount of calories in this meal we doubt anyone that consumes it will be celebrating many more festive seasons.
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