![](https://martinnelson.co.uk/wp-content/uploads/2017/10/IMG_2424-e1508424004967-593x445.jpg)
Spinoffs 3 and 4, on either side of the Thames estuary, are the most industrial, unusual and, in places, intimidating of all the C25 rides. On this day I managed to explore both banks, by taking the small ferry from Gravesend to Tilbury. Continue reading