iPad Cellular Data Settings for O2 in the UK

02 iPad Data Settings (Pay and Go)

Cellular Data

APN: payandgo.o2.co.uk
Username:
Password:

O2 iPad Data Settings (Contract)

Cellular Data

APN: idata.02.co.uk
Username: vertigo
Password: password

Additional Information

APN: ibrowse.02.co.uk
Username: browse
Password: password

Also See Here for Aaron Wardles Settings