Detailed Market Research for event company

We are looking for someone to conduct Market research for the area of London, We are looking for details of current and upcoming event trends in the corporate sectors and high profile events.
We would then look to exposing any gaps in market and what they are to use as sales lines.
This would suit a uk based person, who has some knowledge of London or someone with a solid background in market research.
We would speak before work commences and establish a course of action.