duckula69 Thank you for contacting the giffgaff Community.
The Adult Bar is set to off by default on the recommendation of OFCOM in an effort to stop Minors accessing Adult and Gambling sites.
It is now a common practice on all mobile networks and not just giffgaff.
You can remove this if you can provide the Official Documents to prove that you are over 18.. and you can do this via this link https://giffgaff.com/profile/details#adultcontent
You will need to wait around 24 hours for the Adult Content Block to be removed, although sometimes it can be sooner, and you may well need to reboot your device to make it work!
The Documents they have chosen are either a British Driving License Full /Provisional or a Machine Readable Passport from some 120 Countries.
THESE ARE THE ONLY DOCUMENTS WHICH ARE ACCEPTED TO REMOVE THE ADULT CONTENT BAR, WITHOUT EITHER OF THESE YOU WILL NOT BE ABLE TO HAVE IT REMOVED!
Without either of these documents you will not be unable to remove the Adult content block.