I looked at UK&I’s Amphib & Rep group down to 8oct2015 (11 pages) & found 3 blanks in that list , ie the cuts/medium were missing. [NB the addresses of the medium,small & large only differ by these 3 words so given one you can generate the other 2]
for https://www.ispotnature.org/communities/uk-and-ireland/view/observation/749186/young-slow-worms-2017 with cuts/large of https://api.ispotnature.org/storage/app/sites/default/files/frontend/65710/201710/1459008_cuts/large_WP_20171006_19_02_23_Pro%20(2).jpg
no cuts/medium https://api.ispotnature.org/storage/app/sites/default/files/frontend/65710/201710/1459008_cuts/medium_WP_20171006_19_02_23_Pro%20(2).jpg
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for https://www.ispotnature.org/communities/uk-and-ireland/view/observation/745490/rather-elegant with cuts/large of https://api.ispotnature.org/storage/app/sites/default/files/frontend/17015/201709/1446903_cuts/large_Grass%20Snake%20WWF%2017.jpg
no cuts/medium https://api.ispotnature.org/storage/app/sites/default/files/frontend/17015/201709/1446903_cuts/medium_Grass%20Snake%20WWF%2017.jpg
for https://www.ispotnature.org/communities/uk-and-ireland/view/observation/742394/toadlet with cuts/large of https://api.ispotnature.org/storage/app/sites/default/files/frontend/37071/201709/1438433_cuts/large_20170824_091458.jpg
no cuts/medium https://api.ispotnature.org/storage/app/sites/default/files/frontend/37071/201709/1438433_cuts/medium_20170824_091458.jpg
