I don't think that warbirds are any more likely to crash than any other type of light aircraft. In the County of Norfolk, which is geographically one of the largest, although being very rural with one of the lower populations, over the last five years you have been about five times more likely to be killed in a non warbird type; and we do have quite a few warbirds operating from the county, especially if you count AT6's. Of course that is based on the total number of fatal accidents, there are of course a lot more take off's and landings by the non warbirds. Still I would just as happily get in a warbird as I would any other light aircraft. Also remember that you are about 1000× more likely to be killed on the road on the way to/from taking that flight, than while actually flying. In the East Anglia region, which is essentially the big lump on the east coast of England we seem to have one or two light aircraft incidents reported on the news a month.