Report from London.
Day 1 - Submitted all docs (soft power cooking course)
Day 2 - Asked to book a flight (I hadn't initially) and provide an eticket from the actual airline website
Day 3 - Status changed to pending approval
Day 4 - Visa issued
It was really simple. The main challenge for me was that you can only submit one pdf in each category which has a maximum size of 3mb. Collating and compressing pdfs (ilovepdf is a great help)
My experience was a really simple and positive one. Just followed the application process and was careful not to make typos.
Any Questions then ask away.