Licensing

Licensing - Any (ideally) European experts on how to license a product to a company?

I'm developing a product (an improvement on an existing design) that I would like to license to a company (I have identified the top 3 that would be interested in my sector). I would like to know whether there are any experts that might be able to assist me (the design is developed but it's the licensing aspect that I need assistance on). Thanks :-)