User Interface design improvements

Hi - I'm working on a small number of user interface/product improvements for a mobile based event/ticket booking platform.

I'm looking initially for someone to work with me for an hour or two to review the current product, talk through improvements and then create a few visuals of the improved interface.

I need someone who is going to be quite analytical as we need to be able to justify the changes we are making and how we will measure if they are working etc.

Please someone UK based and I need to get this done over the next 48 hours - as I have a cut off of Sunday evening.

Probably best we have a quick chat on the phone if you are interested and if you send me examples of interface design/improvements you've made that will help give me a feel.

So this project is just a few hours and I hope will then lead to more work in the medium term.

Thank you!
Simon