It all depends on your expectations. If you paid 70 pounds for a return ticket and expect to be treated as a first class passenger with BA, yes than it will be a nightmare. However if you compare the price you paid for the ticket to the service you will receive than it will be a normal charter flight.
Unfortunately at the moment 90 per cent of the passengers expect to be treated like first class passengers and have seat that they can change into a bed. Even if they paid a very low price for a return flight.