The information from Companies House is actually of very little use. Small businesses dont have to file audited accounts for a start. Also the accounts tend to be well out of date. Therefore a satisfactory position 12 months ago might be something totally different now.
Some accounts look wierd because several compnaies might be interelated with cross loans/liabilities which only a forensic accountant could unravel.
As a result it is hopeless placing reliance on companies house information.