What about a partnership with various UK airports to offer customers instant access to buy Security Fast Track ePasses at the tap of a button. (Could use GPS to determine I’m at the airport and even prompt me. Could even use Google to detect busy period, and offer them cheaper when not so busy, etc.)
In the past, I’ve bought them and regretted it when I arrived at a dead airport.
Other times got there and wished of got one, and other times still have got there and paid a higher price at a kiosk to get one.
To me this fits as a nice e addition/perk since starling is a great card to use abroad already.
Anyway, just thinking aloud how I could make my life easier (I travel a lot )