Nuclear Fallout was 8k (one i run) and 16k "onslaught" (competitive, 300 or 500£ prize).
The one coming up in May is 6k and 12k.
They are doing trials in December, timed 400mt to train.
Cool selection of obstacles there, are they all? They seem yes a bit repetitive. We didn't have fire, we had lots of ditches, wooden walls of different heights (last one to be climbed with rope) and rope walls, pipes to slide in, "backscratcher" (crawl on back), carry a sack of potatoes, the slowest section was called the quarry and was up & down like 5-6 times steep muddy slopes to climb with ropes. There was a version of the spider wall, but with the small bits found in indoor climbing for feet.
The coolest bit was the zip line followed by the slide that I posted.
Gonna post more pics as they get published.