[nly]

The price on the ticket is also £1.90M

[arp242]

It usually has an "X" suffix. I'm not sure what the "M" stands for; maybe to mark it as a specimen?

[michaelhoffman]

X means you paid with a credit card.

M means you paid with cash ("money").

[odiroot]

Which is weird because the minimal fare is £2.20 now.

[turnerc]

I believe the minimum fare is the price before any discounts applied, a railcard on 1.90 would be a normal price of ~£2.84

[anticensor]

Interesting. In my country, the minimum fare is a fare floor for discounted fares too (except for disability and military servicemen, which get to travel for free by train by law). For example, currently, the shortest train journey in Turkey is ₺20, even if you have discounts.