sentences:  As a result, until recently, the only tolls on roads in the United Kingdom were mainly tolled bridges and tunnels at estuaries (e.g.Humber Bridge, Severn crossing, Mersey Tunnels and Tyne Tunnel) and some small, privately owned toll roads and bridges (for example, in Dulwich College).The recently built and privately financed M6 Toll, opened in 2003 , is potentially the first of a new generation of toll roads.