No crank no start

Intermittent fault

Car will not start.

Dash lights up as typical, no dimming on starting.

Battery is 12.8v and 1 year old

I've checked...

• Trigger red live wire (wire of death)

• Cleaned X3 earth points and checked for breaks

• Used spare key in case of immobiliser or key fault

• Unfortunately, after 5 attempts I investigated engine bay and touched trigger wire (on blt it has an extension to stop it snapping due to being too short) then tried again starting car. It started no unusual noises. I got 12.4v on trigger wire using multimeter, but this was when car was starting up fine.

Starter motor has not made any unusual noises. Could it be on its way out (19year old and 115k.miles?). It either works perfectly or not at all.

Done this X2 occasions. At end of work day.

Suggestions?