If there is enough interest I am willing to conduct an experiment. Currently two websites I am responsible for are #1 and #2 on Google for their brand name "Tower Forge" (out of 2.5 million other pages). Both use a H1 tag containing that key phrase. If I change the #1 site to use paragraph tags then that may (possibly by changing positions) shed some light on the subject.

Are there any experts here that could give me an idea as to how long it will take to have an effect (if any) and more importantly how long to recover as this is a commercial site that provides my main income.

Drwyd