yeah I am using the spare key actually, basically I ended up in a ditch in my own Mini around a month ago completely ruining the car however all the mechanical parts work perfect... found another one for sale the other week which I was told needed a new engine, obviously I have a wrecked Mini with a great engine so thought I could swap the engine over! Even if it didn't end up being the engine I have all the parts available to fix it with so didn't think I would have any problems.
The guy I bought the car off said that his wife had just filled the car up at a petrol station and then it refused to start again (it has the right petrol in it, not diesel or anything) Green Flag came to them and said the engine was seized or it needed a new starter motor... it doesn't basically! And the engine isn't seized. Had the car recovered and when it was delivered the only key that came with it was a standard, non remote key.
Tried literally everything I can think of, been looking on internet sites for days!