Here are some videos showing earlier 5 & 6 piece lineups of the band. At the top are the full sets from Extonbury 2016, 2015 and 2014, with thanks to James Stewart of Out Of The Blue for the superb production. Below that are a few videos recorded at earlier gigs. The first three are from The Black Horse gig on 5 April, the next three at the Kings Cliffe Club gig in February. Recordings are just by iPhone, the Kings Cliffe three a bit grainy (like the piccie above - still the only shot we have with Mike) but the sound is surprisingly good.  Thanks to Lucy & Carol for the videos. 
NB at the end of each video the screen moves forward to other videos apparently chosen by YouTube. It's an annoying glitch but don't worry just refresh the screen & the original comes back.