Do not attempt to drive through water if you are unsure of the depth.
Drive slowly - avoid making a bow wave which could flood the engine, i.e enter the air intake or interfere with the electrics. Avoid the bow waves of others by allowing on-coming traffic to pass first.
Keep your revs up and slip the clutch - this stops water entering through the exhaust.
Try your brakes when out of the water - here it is all right to use your left foot on the brake as you are pulling away from the water, but you shouldn�t use your left foot on the brake at any other time.
As mentioned above, driving through water at speeds above a slow crawl can result in water being thrown onto pavements, soaking pedestrians or cyclists. You could face a fine of �2,500, with the extra punishment of between three and nine penalty points if the police believe you were driving without reasonable consideration to other road users