2003 triple speed speedo not working?

did it work before or has it never worked? have you removed the front wheel, i know some bikes can be a bitch to get the sensor working after wheel removal

 

have you had a new tyre before it stopped working? that is the usual cause, then they break the magnet in the speedo drive. Replacements are available from a guy in Germany

 

I take that a 2003 Speed Triple's speedo is driven by the front wheel and not the gearbox?

 

W.O.T. (Lings) are expensive, you can try here,may be cheaper. I would have a play first tho if I were you,may just need a clean or putting back together properly . I believe it can be a finicky job but have no experience myself
https://www.fowlersparts.co.uk/browser/manufacturer/triumph