Five events that changed Britain forever?

Dan Snow, historian, and reporter for BBC 1's 'The One Show', has recently reported upon 5 events that changed Britain forever. His list contains:

• The first passenger steam train
• The day the Windrush arrived
• The day the Magna Carta was sealed
• The day the Romans invaded
• The day the East India Company got its charter

I would be fascinated to hear what people think about these choices, I'm still pondering my response currently.

To see video clips of Dan Snow reporting on this go here