This seemed like a great offer to me last year when i went with my gf for our first anniversary and then we went to Namco station for some drinks at the bar and played a bit of bowling (this is about 1 minutes walk away from the london eye) but now it's available at a lower price. :)
You can now travel on the London Eye and then go on a river cruise with a tour guide explaining all the attractions history along the river with fascinating detail.
All this is inclusive in the price and there's no delivery costs for the tickets, as you print out the confirmation email and the prices for the complete package are as follows:
5-16 year olds: £11.20
Under 5's: £0.01
Don't forget to go through Quidco to receive 3% cashback, making this even better value.
Hope this helps for people wanting to go out while enjoying the sun. :)