I'm assuming you are talking about Disney tickets, not Universal? I've only ever seen the 14 day ultimate tickets from the UK and Ireland Disney sites, but it's usually 14 day tickets for the price of 7, and it's the ultimate tickets that include parkhopping, water parks, and a few extras like minigolf, etc. Those are exclusive to European residents. Most people visiting Disney from the UK spend more than 2 days because it's so expensive to fly and it's such a long flight, with the jet lag and everything, it's not worth it to most people to only have 2 park days once they're there. But that's up to you. I think if you are going to only do 2 days, you'll have to go through an American site. Are you staying on property? You might consider looking at Small World vacations. They are free and can advise you on discounts, etc. They will book everything for you. I've never used them myself, because we always use the European discounts and small world vacations can't do those because they are US based, but Disney Food Blog and Disney Tourist Blog both recommend them. There's also Mousesavers who send out discount codes periodically to subscribers.