We spent the night in the shelter on the summit, making us the 3 highest people in Britain for a night. My companions slept, I dozed for about 2 hours - the rest of the time I was doing timelapse, video and photos...
Ben was the main star obviously (video above), but I got some selfies along the way - this looping video below was taken with the iPhone on a little stand - iPhone 4K video in low-light was very good quality! If you look at the tripod (holding my Canon 5D MkIII) you can see I have it tied down to a bag which had BOULDERS weighing it down - it was extremely windy. The eagle-eyed might also spot that I have the camera on top of a small video tripod head screwed to a medium video head (which is in turn mounted on the tripod legs) - this allowed me to get some faux-slider/dolly effects without carrying an actual slider, as well as 3-axis movement for vertical shots. It didn't get much darker on the horizon than this either, being so far north and close to the longest day of the year.