Wanted: Track frame to start a uni project

Hi Everyone,

 I have always been in to bikes ever since i was young just love the mechanics of themand how they work. For an art project for my first year uni project i havemanaged to convince my lecturer that bikes are beautiful and he is allowing meto build a fixie. I am looking for a frame i have a budget of £70. I would likea newer shaped frame with thicker tubes. Don’t mind about the paint work as am going to respray. I no am asking a lot for the money but any help would be appreciated.Thanks Paddy