Travel tips: Should you buy an Oyster Card before you arrive in London?

By Michael Gebicki
Updated January 19 2017 - 1:19pm, first published 12:30pm

MY WIFE AND I PLAN TO USE AN OYSTER CARD IN LONDON AND TAKE A TRAIN TO DUBLIN. IS IT CHEAPER TO BUY BOTH BEFORE WE LEAVE AND IF SO WHERE? BETTER TO BUY A SIM CARD IN LONDON AND DOWNLOAD MAPS OR TAKE A GPS? D. HEUSTON, MILPERRA