I breathed a sigh of relief this morning when I heard in a radio traffic report "services through Haymarket are back to normal after engineering works".

For I had been totally discombobulated last night when my train from Preston after arriving at Slateford chugged off into dark and unrecognisable territory eventually surfacing around London Road and coming to rest in the hitherto unexplored backwaters of Waverley, made worse by the reconstruction around us.

Thank goodness for the homing instincts of my son who led us to the desired exit.