Three weeks, only £300 & 10% per-day delay penalty if you exceed the deadline.
Make a PHP MVC website similar to (LBS) http://www.londonbusinessshow.com.
Apply all in mockups & WORD DOC on two domains. You must read all in this google drive folder then respond only it works for you; [login to view URL]
Within the deadline, if you do extra features or functionalities (which is not part of the current website or requirements) which enhance the website massively; I would be happy to think of giving a reward too, but advice before doing so.