Rather than start a new thread I was booked on LH935 LCY-FRA on the 15th July. Flight was cancelled about 4 hours before departure with no reason given at the time. I called up CS who couldn't give me a reason either. I accepted a re-route on LX via Zurich and arrived in Frankfurt 12 hours later than planned. I filed an EU261 claim which was knocked back - the flight cancellation was due to "poor weather conditions".
What should my next move be? I should also submit my hotel bill for the night in Zurich too?