If you used a monthly parking permit please divide this cost by 20.
For example driving to a train station, before getting the train to work.
For example, after-work drinks, gym memberships, shopping.
This is based on your new working pattern and how much you save by not commuting as often.
If you're now working from home - don't worry, you probably don't need to tell your insurer.
Increase in energy spend
While charging your laptop for 8 hours a day isn't going to break the bank, you will see an increase in your energy costs while working from home.
Running the heating, leaving lights on and cooking the extra home-made meal will add a few pounds to your energy bill PER DAY.