From what I can gather, Blackwall Tunnel will be closed soutbound on Sunday night after 9pm. Originally the stoppages should have finished at the end of March, but I gather the the work is now being extended to August at least. Ah well another night when we'll have to drive all the way to Dartford Bridge (and the same distance back the other side - an extra 17 miles) - and pay a quid for the priviledge.