Database & Emailing Solution for guests who want to communicate after a Singles Event

General information for the business: We are event organisers who want to allow guests to communicate after each event.
Database management system (DBMS): MySQL
Description of requirements/functionality: Using a smart phone on the night or a PC after the event, guests will have to register for a FREE online account. They must enter the following information (Name, Age, Location/Town, Email, Mobile Telephone, Event Attended and their unique 3 digit ref number which will be given to them on the night).
They must also upload a photo to use the system.
During the night, they right down the 3 digit numbers of people they want to meet and give them to the organisers.
CMS and Admin requirements: Within 24 to 48 hours of the event.

We enter all requests into the management side of the database.
If someone receives a request from an admirer, they will get a notification via email and will be able to login and see the person’s basic details (Name, photo, Age, Location) of who is interested.
If they like the look of the person, they can contact the person via our internal email system or they can ignore or delete the request.
Guests can upload up to 3 photos from PC, Facebook or Mobile device.
ALL PHOTOS MUST BE APPROVED BY ADMIN TEAM BEFORE THEY GO LIVE!!
We want to able to send E-Flyers to promote new events to all people registered on our system.
Specific technologies required: PHP is preferrable
Extra notes: We can only work with developers in the UK and the budget is approximate, ideally less than £500. Hosting advice is also required and everything must be tested and uploaded to the chosen hosting provider by the developer. We have ideas how to progress this and e-commerce + e-marketing will be essential skills for phase 2. To keep under budget we are happy to listen to ideas...