@garybremmer
The thread title reads no Date after ICS, did you by any chance miss-spell data?
If yes then please ask the moderators to change the thread title, it's a bit confusing.
About your problem, thesmellyone is probably right.
You can manually enter the APN settings that are required. go to giffgaff's site and check to see what the APN settings are and then enter it manually.
Long press the power button and on the pop up menu that comes ensure that Data network mode is activated.