You have  a duty, under the Insurance Contracts Act 1984, to inform an insurer of every  matter that you know, or could reasonably be expected to know, is relevant to  the decision whether to insure you and, if so, on what terms.
The “Duty  of Disclosure” applies before you enter into, extend, vary or reinstate a  Policy, and applies until the time when the insurer issue a policy schedule,  membership certificate or other written confirmation of the issue, extension,  variation or reinstatement.
If any  information provided changes (including any change to your health, occupation  or pastimes) before the insurer sends the policy schedule, membership  certificate or other written confirmation of cover to you, you must tell the  insurer.
The duty  does not require disclosure of any matter:
  - that  diminishes the risk to be undertaken by an insurer; 
- that is  of common knowledge; 
- that we  know or, in the ordinary course of our business, ought to know; or 
- as to  which compliance with your duty is waived by us. 
Non-disclosure
If you  fail to comply with your duty and the Policy would not have been entered into  if the failure had not occurred:
- the  Policy may be varied to reduce the sum insured or to reflect the terms that  would have applied if you had complied with your duty; or 
- the  Policy may be treated as never having existed if your non-disclosure was  fraudulent or, if it is within 3 years of entering into the Policy, the  insurer would not have been prepared to enter into the contract of life  insurance on any terms.