It's been 18 years since I've flown through Gatwick so I have the following question:
I arrive at LGW (North Terminal) at 10:45 AM on a flight from Luxembourg. I want to catch a 12:05 PM train to Reading. Will one hour and 15 minutes be long enough to go through Immigration, Customs (carry-on only), get from the North Terminal to the South Terminal and then to the train station? Or should I plan on the 1:05 instead? (I want to buy a ticket in advance so save some money. I don't want to take a bus because I'm actually changing trains in Reading and I prefer the comfort of a train.)