By John Oxley The mayor’s reckless promise of lower fare Fridays is a sign of more disingenuous politicking to come, writes John Oxley While Westminster talks about when a general election might be, the London mayoral contest is speeding towards us. There are now just three months until the capital goes to the polls and the campaigning is kicking up a gear – with the giveaways and campaign pledges starting to emerge. With the race far from competitive, however, these campaign time bungs could just end up costing Londoners in the long run. Incumbent and frontrunner Sadiq Khan has already unveil…