Haringey Council is planning to introduce a diagonal crossing outside Wood Green station. However, given the paucity of the information on Haringey Council's website you may not have spotted what's implicit in that description, namely that it is only half a diagonal crossing.
Unlike the diagonal crossing at Oxford Circus which, when viewed from above, is a giant X with two diagonal routes that people can take, the Wood Green plans involve only one such route.
The plan is illustrated in these rather helpful pictures that Haringey Council has supplied me after I got in touch. The pictures are useful and were sent promptly - though their existence also highlights what a missed opportunity the page on the Haringey Council website is, which is just text and does not have these pictures:
Click on image for larger version
Click on image for larger version
