Never tried it, but wanted to many times. You're right about there not being much info on it. I asked this same question on the forum a few months ago and got no replies.
Since Kent Soap is rebranded MWF, I would speculate that the cream is a re-brand as well.
Since it has menthol and is made in the UK, my guess, and it is stricly a guess, it that it is re-branded Ingrams.
Or, considering it is quite a bit more costly than Ingrams, It could be their own formula made for them by Creightons.