I often travel with National Express on Saturday evenings from London-B'mouth and they're usually packed, so it's unlikely there'll be space for you to hop on to an earlier one. If your return is a 'Funfare' ticket (cheap ones booked on-line) the driver will definitely only allow you to board the 1930.
I've booked the 2030 back to allow a bit of breathing space / drinking time if we hoist the trophy but you'll have plenty of time too as it is. Just hope we're not moping miserably around Victoria Coach Station. I'm feeling confident we won't
