Business advisor in London for my startup

Hello, i'll be in London from 4 to 13 of April (attending the StartupWeekend) and I would like to have an advice from a person in London who can help me finding the right VC or BA to contact, and maybe assist me in contacting them or come with me during the meetings. I would like to meet you during my stay, we can work together some hours or full time if you want. My project is an ambitious mobile app. Please be cheap now, the profitable job will be later! In your message i'd like to read why you are the right person and how you can help my project, and how many times or hours we will meet. Thanks