Update on this topic.
My brother bought a Jag S Type that only had one key and decided to get a spare.
He phoned a local auto locksmith to be told it would cost £175.
I went online and found a company that did home/work visits and the same key was £100, a big difference.
When he had done the key for the Jag I asked if he could sort a key for my vrs. He took the damaged key into the back of his van, stripped it down, put it back together, plugged his computer into the car and reprogrammed the key, it worked.
It had chucked the code when I dropped it, possibly the battery had come loose.
£30 later and I now have two working keys again.
This is the company, highly recommended,
https://www.autokeysnortheast.co.uk/