I am wondering whether the disclaimer at the bottom of Money Saving Expert has changed recently. Last time I looked my recollection is that it had an FSA registration number, but I could be wrong. Anyway, his disclaimer looks like a good example to follow if you asked me.
My understanding, which again is not expert level, is that you are OK advertising financial products, it's when you start comparing them or singling them out for recommendation that issues could arise. My understanding is that you can provide information about products, but you can't recommend particular products or put them in a particular order. That would be financial advice and may require FSA regulation.
Rgds