They, unfortunately, weren't very juicy - such a pity as we were making drinks at the time - but they smell delicious. They are also the size of a fingernail!
CSIRO (use the link to read more about the varieties they've developed) from a native lime, and, now I read the info sheet, good for making sauces. There are a lot more on the tree so I might just try out some sauce recipes.
And, don't worry, I have a normal lime tree too, especially for drinks!