Planning a trip to the UK from Department 22 Brittany. I have a couple of questions …
I will have to go through the Dartford Tunnel, how much is that?
Is it possible to buy a ‘pass’ for the toll roads ahead of the trip?
Thank you.
You can’t pay at the crossing, info here
https://www.gov.uk/pay-dartford-crossing-charge.
Assuming you mean French toll roads, info here http://www.autoroutes.fr/en/payment-methods.htm
Pay on line…it’s really easy… we do a trip each year and never any probs…
You pay for the Dartford Crossing online, have a look at their website. You cannot prepay for the French autoroutes but if you can always pay with a Debit Card or, if you want everything to be really straightforward, get a Télépéage.
https://www.saneftolling.co.uk/articles/setting-up-your-sanef-telepeage-tag
Yes indeed David… we had telepeage for a few years before we moved permanently…it was wonderful sailing past the long queues in the peak season… 
Thank you for the info. Will take a look at the website you provided. Regards.
Just got back from a family visit
Dartford tunnel was £2.50 online
We have got an account but forgot to change the reg when we registered the van in France. Or it would have been £1.70
I used to have t telepaege but we don’t travel as often now, because we live here permanently, I just use my French debit card. It’s quick enough if there aren’t any queues x