Right then, you may or may not know that I am developing a project called HowBad.is.it. One of the things that was planned for the website is a cinema postcode search. You type in your UK postcode, and ping, back comes a list of the cinemas nearest you.

My initial ideas were that I needed to find / work out some complex function that will convert a postcode into the easting and northing co-ordinates. But once I had set off into Google seeing what I can find, I actually realised I was going in compleatly the wrong direction.

After a bit of digging, it turns out it is actually quite simple, all you need is a table of all the UK postcodes with their co-ordinates. When the user enters their postcode, you find the postcode in your table and return the co-ordinates, et voila, you have the basics of your postcode search.

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