The London Overground is being renamed and rebranded in a bid to make it easier for passengers to work out where their train goes.The six different branches of the 113-station network are each being given a different name and colour – ending the format of all Overground routes being shown as orange-bordered lines on the Tube map.Transport editor Ross Lydall speaks to Mayor of London at Highbury Station about the rebrand and to ex-Lioness Fara Williams on the naming of the Lioness line.