Talk to your Insurance company. Tell them that you can't work with a corsa and explain why. They might be able to help. Two years ago my car was off the road after a guy drove into it and the Insurance said I couldn't put roof bars on the courtesy car. I could use the car for business as I had business insurance but no roof bars. Hmmmm that makes sense. They knew I was a window cleaner when I took the policy.
Well I said I couldn't work without ladders and thier legal people claimed for lost earnings from the other side, who wierdly were the same insurance company!!! I got £500, and still used the Corsa for personal stuff as well.
Not bad hey, Paid holidays.
If the accident was your fault though this all might not apply. Hope it helps.
Colin