a few issues since Christmas: battery was dead so had to bump start, but drove ok. Whilst driving a few days later the revs dropped right down then straight back up again? Then started car to drive home, got a few hundred yards and died with oil pressure light on. Started again and got to garage over the road to top up oil as it was low. Would not start at all after that, just turned over with the brake system warning light on until battery went flat (after only 6-7 tries). So had to be toes home the next day, bumped the car whilst on tow and just let it tick over so I had power steering and brakes, and charge in the battery. Plugged in Vag com today, no error codes. Checked oil, and maybe topped up too much as it's right at the top of the bendy bit on the dip stuck? Battery discharged whilst I had ignition on to reset throttle body, and run the fault code check. Had a look at the battery and realized it was half way submerged as the drain things under it were blocked! So sorted that. Jumped It after leaving ignition on for 5 mind to reset throttle body and it started and ran fine, but cut out after a couple of minutes with oil pressure warning light on again, and hasn't started again since. I don't know which bits of all this are relevant or if they are related and I am a bit stumped as to what to do next? Someone has said it could be fuel pump related? Any ideas anyone? I was gonna let a bit of oil out and give it another try? Any advice welcome!