Re the business docs, it seemed like we sent them everything & anything. We have 2 businesses and although we met the criteria for the visa appl with just 1, they wanted everything on both companies. 3 years accounts and then management accounts at a date set by Immi, all our initial docs from companies house & HMRC upon registration, 3yrs of vat returns and a letter of confirmation from HMRC re year end accounting dates, 3 yrs worth of evidence that hubby has day to day involvement in the companies and this is only the stuff that I can remember. As well as business docs, we had to get all our personal assets valued at 3 separate dates and we had to complete Form 80 for both of us.
We submitted the last lot of docs on the 12/3 and had our visa granted on Friday 13th. Was any of the requested info looked at, I wonder???
Our business plan was about 200 words and wouldn't even get us a bank loan here so I don't think that was even taken into consideration!
Be prepared for the worst & if you don't get asked for half of the above then you'll be pleasantly surprised, Good luck