Instructions:Another great find - thanks to Martin on MSE - thought it might save someone a few pennies...................
25% off all Greyhound coach fares when you register online and enter the code greysave1
Greyhound services run to and from London Victoria, Southampton and Portsmouth.
The code's valid until Sun 31 Jan '10, for travel at any time, on any day, until Sun 28 Feb '10. The offer is limited to ten transactions per person, and there's a booking charge of 50p. You'll also get a free newspaper on most departures.