Thanks for your input guys. I'd never heard of the Min Min lights before, it was an interesting read, Jack Pettigrew's explanation of Min Min doesn't sound beyond the realms of possibility (not that my image is necessarily of a Min Min Light), thanks for the 'up' though.
I've never seen or captured an Aurora before so wouldn't know what I was looking at without confirmation from kind folk such as yourselves. @cometcatcher I'll upload other frames later today (the one shown in my original post is the 1st of a 60 to 80 frame sequence during which time the light slowly fades before dissappearing). Cheers again.