London's transport system has been crippled as tube workers go on strike again. It isn't about working hours or the Night Tube this time, but jobs and ticket office closures.

The unions are protesting about the number of jobs that will be lost as part of the ticket office closure programme, which they estimate at around 800. Transport for London said the number of redundancies would be minimal and has recruit 200 extra staff , but the unions have rejected this offer.

As we learned last year, TfL jobs are a closed shop. And everyone wants to be a tube driver. So how well-off can you get thanks to all the concessions the unions have secured?

Here's what you need to know about London's rather well-paid tube drivers.