Looking for the best deal on 6 tickets for adults on either Saturday or Sunday for the London Eye. Did a quick search but did not see anything come up. Cheapest so far seems to be buying from London Eye website as prebooking is 10% off - so £13 each. Had a quick search on Google and have not found any cheaper. Thanks for any recommendations. Finally all of us have Oyster cards but can only use them for 2 for 1 offer Monday to Thursday 3pm till 8pm :?