This takes me back, got my visa in 2005. Then an email from TG after booking one way flight saying I would not be able to fly without an ongoing ticket. They ignored emails and phone calls so in the end went to their office in London to ask why not. Nobody in the office except staff, phone ringing all the time not answered- they did not know so rang TG staff at Heathrow who said no problem. They lied and said the rules had just been changed, only travelled with them once after that, customer service was a joke and looks like it still is.