Starting problem i have a 1998 daytona. i parked in up and did not start it for two weeks. the engine turns over but it won't fire. i have not tampered with anything. the bike is kept outside. it has petrol in it as i have just put some in, prior to this i shook the bike and heard it sloshing about. any ideas?

Can you hear the fuel pump 'prime' when you first turn on ignition? You should hear the pump run (whine) for 3 secs or so after key first on.

The '98 has a notorious problem associated with the 'ground block' which is a common node point for all the return wires for the battery -ve.
There is a replacement/upgrade for this part which includes a new block and additional wire back to the battery -ve terminal

The part number you need is Triumph part number T2505055 and is under $10. Good idea to replace this whether the primary cause of your problem or not (good likelihood it is however)

See details here -
http://www.triumphrat.net/speed-triple-forum/109921-airbox-removal-no-spark.html#post1268991