Help Me Beat my competitors

I’m looking for the best SEO person on this platform for my website www.limohire-sportcarhire.co.uk I’ve been working on it for years and am receiving good traffic. I don’t understand why this site is not beating the competition, I’m looking for some to work with on a long term bases. If goals are reached then I will forward more projects to this person also I need this person to help me get very strong backlinks for my site and work will start immediately. Here is a list of my competitors that I want to beat:

www.limohire-in-london.co.uk
www.booklimo.co.uk
www.limousinesinlondon.com/
www.limohirelondon.co.uk
ww.easylimo.co.uk