I run a London based Speed Dating company called DateinaDash established 9 years. The website is built in core PHP & MySQL. I had a new design made nearly 2 years ago now but have had a NIGHTMARE trying to get this integrated into the back end. One developer tried to rebuild the whole thing in Laravel then encountered problems when he tried to import our database (47k users) and realised it wouldn't work.
The last developer got about 90% finished (taken him 18 months) and for some reason has just walked out of the job and refunded me as he says he 'can't take it anymore'.
Most of the work on this project is front end styling/CSS to make the website look like the .PSD designs on both desktop and mobile.
There are quite a few bugs and complicated problems to fix including a change to the URL structure, & redirection of URL's before launch.
There are one or two new features that need to be built (but not really complicated).
The hardest challenge is probably trying to get your head around hundreds of files and thousands of lines of code. It's one of those websites where a deleted comma can blow the whole thing up!
I can provide a full detailed spec. I am looking for UK based devs only for time zone and communication reasons.