(#209) 15:58 looking from JCMB roof towards Pentland Hills
(#209) 15:58 looking from JCMB roof towards Pentland Hills
(#210) 15:59 looking from JCMB roof towards Pentland Hills
(#211) 15:59 from JCMB roof, part of photo at original resolution
(#212) 16:04 looking from JCMB roof towards Pentland Hills, clouds closing in within seconds
Photos taken with FUJI MX-2700 digital camera at 1800x1200 pixels, scaled to 600x400 (#211 unscaled). They show a rare instance of nacreous clouds. The colours seen in these pictures are real and are caused by diffraction in high altitude ice crystals.
Jason Cowan at the Royal Observatory has taken some photos, too.