Hard to beat these for cheap.
http://www.amazon.co.uk/Charge-Splashback-Folding-Mountain-Tyres/dp/B00KFEG7QW?_encoding=UTF8&tag=retrobike-21&linkCode=ur2&camp=1634&creative=6738
@krankers started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Hard to beat these for cheap.
http://www.amazon.co.uk/Charge-Splashback-Folding-Mountain-Tyres/dp/B00KFEG7QW?_encoding=UTF8&tag=retrobike-21&linkCode=ur2&camp=1634&creative=6738