There are over 10 SEO companies in Leeds. As you are based in Leeds, why not speak with optimisation companies that are also in Leeds; as they are local it only makes sense.
This way you can meet with them and ensure that they are all they claim on their website.
If you would like to get a few quotes from web optimisation agencies in Leeds, just fill in the form opposite.
As you are based in the city, it only makes practical sense to work with an optimisation agency that is also located in the area.
They are local and you can meet them without taking a whole day out of the office.
A face to face meeting is always good as it allows for better communication and understanding to be communicated both ways.
As there are many agencies in the city (over 50), selecting one that knows your industry is a wise move.
All marketing agencies in Leeds are different and all have different experience based on their previous clients. So selecting one that knows your industry is only logical (whether it is IT, engineering, politics, law enforcement etc.).
It will take you a long time to find 4-5 search agencies around the city that have capacity and experience in your industry, then get quotes.
SEO prices do vary from agency to agency, so you do need to shop around and get a feel of prices.