Thanks guys. And I knew Pluto would rate a mention at some point!
I've only managed to catch it once and made a conscious decision not to include it this time otherwise it would open up the whole thing of dwarf planets and I'd have to start chasing down more.
I'm thinking about in the future maybe getting as many Solar System objects as possible in one night - moons, asteroids, dwarf planets, comets etc. That would be a fun thing to do.
The hardest thing about getting the major planets is getting Mercury at a decent enough elongation.
Cheers,
Tom