She's cleaning up well.
My car came with NO keys (my dad must have taken them with him to the grave). I was able to get all three keys cut by using the key codes I found on the locks. I used Steve's Lock Shop
http://www.steveslockshop.com/ and Triple C
http://www.triple-c.com/Lotus_Replacement_Car_Keys.cfm .
The keys can be cut by code, but you might have an issue with knowing which blank to cut the code onto. The two locks shops listed above were both great to work with. I only had one incorrect key cut and that was correct on the second try.
I removed the electrical cap off the back of the ignition switch to find a paper label with a hand written three digit code that was the key code. I did this with the lock still in place. Even in extreme Lotus position I could not read the label. So I used a digital camera.
I also removed the drivers door lock (luckily the doors were not locked) and rear deck lid lock (after removing the hinge pins to get the deck lid off), then removed the lock cylinders from these locks to find their key codes (also 3 digits? but stamped on metal).
I don't remember all the details, but I made this note about the rear deck lock: "The lock has a stop that prevents the cylinder from being taped out unless the lock pins are depressed with something such as a bobby pin." Beyond that I think disassemble was somewhat intuitive.
Here is the original thread from the Yahoo Group with advice I got, some better than others.
http://groups.yahoo.com/group/lotuseuropa/message/109471 Of course you can buy proper locks with keys from RD. He has them listed on his web page. $104 for a door set and $97 for a bonnet and engine cover set.