figment_uk should be deleted as it has not been relevant since community activity was removed as a way of keeping a SIM active.
OK, let me be first to ask.
When was community activity removed as a way of keeping your SIM active?
And even if there was an Announcement to that effect, the current Terms & Conditions 13.3 (b) disagrees and does not refer to the community at all in s. 13.3
You could argue that without a goodybag or credit balance a visit to the free rated NHS website should also preserve your number for a further 6 months, when using the device with an active giffgaff SIM. However visiting your dashboard page for free, should also preserve your sim, even though it is not part of the mainstream community. In fact I’d go further, if you visit your account page from a third party computer, that too should preserve your sim.
When you look at it closely: b) make at least one connection to the Internet;
doesn’t specify whether the Internet connection is required to be a giffgaff mobile connection or a WiFi connection, as long as you log in as a member to giffgaff.com and do something significant, that should be enough to keep your number active.