As we are moving into the Christmas period (yes, it is not that far away), you need to check your shop insurance policy for how much the stock is covered for.
Many, if not all, shops make over 50% of their annual profits in the period October, November and December. Yes, we may be coming out of a recession and by all accounts, we may be going back into one next year, but this will not stop the UK public going out and buying. Admittedly, we will not get to the heady days of 2007 and 2008 when credit card debt spiralled and people where buying, at times it felt, for the sake of it.
Some different types of business insurance policy do include terms which automatically increase the sum insured for stock for certain times of the year, usually leading up to Bank Holidays. Unfortunately, as we move into the darker nights, not only does your business get busier, so do the criminals. They know that you are going to have more stock insured, so, there are more break ins in the latter and earlier parts of the year.
Make sure not only that you have the correct security in force, as defined in you policy, but also that you have the correct sums insured in the event of a loss.

