Gents, just to remind you that the Dartford Crossing is free between 22.00 (10pm) & 06.00 (6am).
If you pre-pay any Dartford fees, it'll cost £1.67 each way.
If you don't pre-pay, the cost will be £2.50 each way, but you have until midnight the following day in which to pay.
If you don't pay by then, they'll chase you for a £60 fine!!
Also, speed cameras on the M25 all over the place (what's new), & averege cameras on the Crossing approach - speed 50mph!