Holiday Parks are very secure environments. Even when you are not staying in your home, you can have peace of mind knowing that regular park patrols take place and, should repairs need to be made, you'll be contacted as soon as they're noticed. That said, although not expensive, holiday home insurance is a legal requirement and you will be expected to show evidence that you are covered.
Own a Holiday Home is unable to provide insurance advice, but can provide details of reputable insurance companies who specialise in providing mobile home insurance.