The real question is ... why do they still make wallets that are too small to take £20 notes? Are they waiting for someone to come up with trouser pockets that are big enough to take big wallets?
I hope all machines bring this back. Sometimes I don't want a tenner. Its very handy.
Just like the old days when I could get away with putting £3.00 in my tank, and air compressors at garages where real compressors. You could put in as much air as you wanted ,without some dumb machine doing it automatically for you.