In London the Standard newspaper, now defunct, had an effective method of ensuring it got news before its rivals. Every messenger bringing material or news reports to the Standard was given, on arrival, a blue ticket if it was a Government or official report and a red ticket for anything else. The tickets (a quart of beer for a blue ticket, a pint of beer for a red one) could only be redeemed at The Black Dog pub next door. This meant the Standard got its material first — and their rivals much later — since the messengers would always redeem their tickets before going on.
— N.T.P. Murphy, A Wodehouse Handbook, 2013