Liverpool, merseyflow, and I’m a long way from alone - there’s one sign, a website (merseyflow.co.uk) with major availability and usability issues, and they charge a toll on both the old (used to be toll free) and new bridges.

The first month of operation generated £1M of revenue from fines alone. https://www.google.co.uk/amp/www.liverpoolecho.co.uk/news/li...

The same article asserts a revenue of £50m+/yr from fines for dartford - same administering firm. With toll barriers this revenue would have been zero.

Looks pretty strategic to me.

There's the dartmouth bridge crossing, where there are about 50 signs either side saying "PAY YOUR TOLL ONLINE OR FACE A PENALTY"

Minor nit: It's the Dartford Bridge Crossing, not Dartmouth (which is in Devon).

Although, bizarrely, if you enter "dartmouth bridge crossing" into Google, it'll return the Dartford one.

As mentioned below, Dartford Crossing (bridge + tunnel) is an automatic toll (using ANPR).

There are also a few other places which use ANPR for charging (Betteshanger Country Park car parking springs to mind) but I don't think you can consider those "tolls" in the traditional sense of the word.