Burntshed
If the VAR (value at risk) form you completed showed that you were under insured, then of course any claim would have been reduced accordingly. When you take out an Insurance policy, you have to declare that the sum insured covers the value at risk. There are alot of people that take out the lowest possible cover to minimise the premium they are paying. If this is the case they should not moan when Insurers reduce their claims.
Following your claim, your Insurers will write to you, asking for you to increase the sum insured to reflect the VAR form amount. This will of course increase your premium. If you refuse to increase the cover, your Insurers may decline to offer renewal.
huckster