There are lots of lists like this that claim to show the very best in search agency services. Frankly, Top SEOs captures it with a proven track record of evaluation of all Search Engine Optimisation Companies for many years. Here are 2 top ten lists: the first goes by the top 10 ranked by results and reputation, the second on the best at Local SEO.
If you are targeting a global audience with your brand, go by the first top 10 list.
If selling locally, choose from the second list.
I have personally worked with some of these Search Engine Optimisation Companies and can really vouch for the Top SEOs site choices.
Best in your business!
Top 10 SEO Companies in The UK
Top 10 Local SEO Firms