In the Unverified Numbers Database are some freephone numbers for Intelligent Finance, I have just used one to call IF and despite the"Other Information" saying, "
Card authorisation line - for new cards, but I'm sure they could transfer you
", I was put in a queue then answered by a human, no mention of card activation and my Plan query was sorted.
So I can confirm this number, at least, works;- 08005875758.
.