Flexible PHP/MySQL Developer

I'm a web designer/xHTML-CSS developer and I'm looking for a reliable PHP/MySQL developer to work with on a regular basis as and when my projects require back-end development work. I have two which I need starting in the next couple of weeks. I would ideally like to build a relationship whereby we each complement each other's skill-set and can therefore feed each other work. Web Standards advocates would be ideal. I'm based in the North West, so it would be handy if you were too, although I'm equally happy to work remotely. * I'm sorry, but off-shore replies cannot be considered. *