A number of providers have anti-fraud measures which check online quotes requested.
The rejection (or increased pricing) normally only kicks in if the data input in key underwriting areas is changed. So, did you play around with data. Such as different occupations or different dates on history etc?
I am an Independent Financial Adviser (IFA). Comments are for discussion purposes only. They are not financial advice. If you feel an area discussed may be relevant to you, then please seek advice from an Independent Financial Adviser local to you.