Matt and Urzila build a wheat biscuit castle
Here's a brief description of the contestant's attempt. Someone's probably working writing up more detail!
Matt and Urzila built a large castle using cardboard and a glue gun as a base then added wheat biscuits as bricks, with Matt using milk to help him eat 9 wheat biscuits. However, it was revealed that Matt had started to store half eaten wheat biscuits in his back pocket, pretending he had eaten them to get more wheat biscuits, so they were disqualified from the task.
(Written by Taskmaster Wiki contributors)