The Scots like to be different mate who knows whyI'm not sure why the Scottish one is 'different?'. I downloaded my passport and it gave me the option of save to Google pay or Samsung Internet (whatever that means).
Just opened my Google pay and added it.
Yes put it in your 'wallet'Just take a screenshot of the letter which will save in your photos, you then don’t have to worry about the signal at the ground. That’s what I have done.