Vauxhall Signum electrics

My battery went flat when the car was left for a period of time. I have got the car started and the battery tested and the battery is fine. The problem I have now is the electrics have gone into a kind of economy mode. The head lights come on when the car ignition goes on and stay on all the time. These are the only lights that work (no side or main beam lights)fog lights only work at back, the windscreen wipers only work on standard speed, indicators flash very fast. The car itself drives normally. Any suggestions?