Click from front end

[His Dudeness]

If it's the steering bearings you should be able to feel movement in them if you hold the front brake and rock the bars back and forward hard. It would be worth checking the wheel bearings as well because you don't want a wheel bearing failing at speed. Take the wheel off and turn the bearing with you finger and feel for notchiness. But I guess it's pads as Paul said. What brand pads have you got and how old are they?