One possible place to start is to telephone and ask for some feedback on your current SEO. All calls are put through to a senior consultant and the first hour is absolutely FREE. There is no charge and no obligation.
What we often produce afterwards if appropriate is an analysis of: a) where they are now, b) how they got there and c) what improvements can be made moving forward. See example report or click here for more about where to make a START. I think after the phone call you will see why we are the most sort after SEO company both in London and across the UK.
Call 020 8405 6418 now, you'll be glad you did.