Posting updates about your holiday on social media could leave you vulnerable to being burgled – and even worse, your insurer may not pay out if your things are stolen.

Experts have warned that "Insta-bragging" – posting boastful images of your holiday on photograph app Instagram – could invalidate a contents insurance policy.

This is because most insurers include a "reasonable care" clause which, although generally related to making sure windows and doors are locked, could in future extend to being responsible with what you share on social media.

Dan Plant, of MoneySuperMarket, said that with the average insurance claim for burglary just over £4,000, it means homeowners could potentially lose out on thousands of pounds of cover.