David of Broadway wrote:

Interesting. So I could have entered anything I felt like entering?

I think so, though for reasons noted I did enter the correct value

I definitely did not get a separate ticket. All I got was a receipt.

Maybe it's changed recently, then. Every time I've bought a ticket
from an NS booking office and been charged the surcharge, I've had a
separate ticket for it.

Oh, I didn't know that Tesco had clothing stores in the UK. Asda, of
course, is owned by our Wal-Mart.

No dedicated clothing stores that I can think of, but every "full-size"
Tesco store has a clothing department of some sort, and all the Tesco
Extra stores have a very large one which is a significant part of the
business and not something on the side.

Asda is owned by Wal-Mart, but MX is that its concept (apart from low
prices) is very different. In particular, it is, or certainly was,
known for looking after staff well, which is rather an opposite of what
you often hear from Wal-Mart. The store interiors also tend to be of
higher quality than Wal-Mart in the US, or for that matter Germany,
while the ranges (of clothing and food) seem to be more complete rather
than just "rock-bottom".

Neil