National Express has just released a new batch of UK coach seats priced from £2, each way. Taking the train on some of these routes regularly costs over £50.
The fares are valid for travel until 18 October. You can pick from more than 100 routes in England, Scotland and Wales, but note that availability is limited and early booking is advised.
Here's a sample of what's on offer (prices are each way):
You may have to be flexible with your dates to find the best fares. A £1 booking fee applies to each transaction.