That's everyone in the UK... The whole point of it is to reward workers of the NHS who work when most people don't for under average salaries. Have some appreciation.
~1.2 million people have an @nhs.net account (if I remember correctly from a news article when they had a problem a year or two ago), so a little more than 100. We can't all use this code, but I think it's useful of those who can.
Don't tell a black cab driver what your doing,they won't want you spending your money in other places.
Got to work xmas eve so fuck it might as well get a taxi to work.
Take your time. The two most common Hackneys in London will be those two. Also get the information on the tougher regs while your at it.