hey, i have made steps towards making it work for the uk. for a while the intent schema would just fail to compile with no helpful error. amazon eventually told us that it was because the AMAZON.Food slot type doesn't work with the uk alexa skills as seen here: https://developer.amazon.com/public/solutions/alexa/alexa-skills-kit/docs/built-in-intent-ref/slot-type-reference
then i had to move house and travel a bunch.
i'll get it going eventually, likely just using the AMAZON.Literal slot (which is frowned upon, but with no food slot i either have to make a custom slot with every food type a user is likely to utter, or just allow anything), which will mean i have to fork the code for each language.
if anyone has any better suggestions let me know.
as to a time frame, i don't yet know, but work is being undertaken to get it going.
edit: AMAZON.Literal doesn't work with uk skills either, so jumbo custom slot full of food words it is!