By Andy Silvester In days past, newspapers had a tried-and-tested way of covering rail strikes. The key element was the photo spread of suit-and-tie workers in unusual situations – perhaps one had got the boat in for the first time, or cycled in on their child’s bike. Combine that with a few snaps of Wimbledon-esque queues to get on the bus at Waterloo or Liverpool Street and you could call it a day. Things, of course, have changed. When union bosses call a strike today, there’s no need for anybody working in the banks of Canary Wharf or the insurers of the City to struggle on to nautical tran…