So if your employed income is on your bank statement are you saying you don't have a separate business bank account?
You really should keep employed and self-employed separately for a few reasons -
namely - HMRC can look into your personal bank affairs if they think there is something untoward going on - why give them the opportunity? Plus the bank will not be happy if they find out you are running a business through your personal account.
secondly - if you wanted to go for a mortgage/loan the bank/lender may request a copy of your business accounts so your employed income should not be included.
Just think about it - if one of your clients was doing this wouldn't you be saying they should keep it separate? If only to make your life easier in producing their annual accounts?