I just wondered if anyone could tell me the specific differences between them, apart from the Touch Screen Nav?, does the ICE now include Bluetooth and iPod connection?.

This might get you started in search of your answers (check Wiki too):

http://www.fullfatrr.com/wiki/Range_Rover_L322

Thanks for that , the one I'm looking at, I've found out isn't a full face lift, it has the touch screen nav though.

Just a quick note ref. ICE. On a Vogue spec car, you'll have the Harmon Kardon audio system - which is very good. You'll also have Bluetooth. Ipod connectivity is, however, a complete PITA unless you spend an £500 on a gadget sold by LR.
If you find a car with "rear seat entertainment" - RSE - there will be a jack socket in the centre console to make things a little easier . . .

 Where do you go after one of these . . . ?

Thanks for the heads up, the one I was looking at doesn't have RSE, does an AUX jack come as standard by the rear heated seat buttons like in the Sport?.
It sounds like it isn't worth paying a premium for the Touch Screen Nav then as the Nav is still going to be very dated, and on the BMW style Sat Nav I've been quoted £350 for iPod and Bluetooth connectivity fully installed.