The DJP carries a warning which states:
If you dishonestly enter information or make a statement that you know is, or might be, untrue or misleading, and intend by doing so to make a gain for yourself or another person, or to cause loss or the risk of loss to another person, you may commit the offence of fraud under section 1 of the Fraud Act 2006, the maximum penalty for which is 10 years’ imprisonment or an unlimited fine, or both.
Failure to complete this form with proper care may result in a loss of protection under the Land Registration Act 2002 if, as a result, a mistake is made in the register.
This means:
If you lie on this form to gain something or hurt someone, you could be charged with fraud and go to prison for up to 10 years, pay a huge fine, or both. If you don't fill out this form correctly, you might lose legal protection if there's a mistake on the property register.