Technology for travel is gaining ground everywhere. If you use this method of getting from Wirral down South - take note-- the Dartford tunnel is going cashless after this month -moving to an upgraded non stopping 'tag' system similar to Londons congestion one .If you dont have the prepaid account....
"once Dart Charge is in place you will be able to make one-off payments in advance or by midnight the day after crossing:.........
online at www.gov.uk/dart-charge
over the phone by calling: 0300 300 0120
via a payzone retail outlet
by post (in advance only): Dart Charge Customer Services PO Box 842 Leeds LS1 9QF"
I can see that being a nightmare in the making next holiday season when all the infrequent users are confronted by it!!