unite said the action will involve 1,000 drivers at garages in brixton, croydon, norwood and thornton heath. today marks the end of tunnelling for london s thames tideway tunnel, also known as the super sewer. the 25km tunnel runs from acton to beckton, and when it opens, it ll reduce sewage pollution into the thames by 95%. it s the largest tunnel to have been built under a river anywhere in the world. its deepest point is 65 metres below the thames, and its wide enough to fit three double decker buses side by side. when laura kennedy founded spanners with manners with her partner siobhan, they didn t expect the surge of women who applied. they now claim to be london s first all female garage, and want to encourage more women