Depending on what time we finish at Twitton, I might try and make it. The main problem is that I think they're still closing the southbound Blackwall tunnel at 9pm on weekends. It's a bloody pain, not only do I have to drve an extra 20 miles, but it costs my a quid for the Dartford Crossing. Via Rotherhithe might not be so far, but it takes me longer.