A digger spends its life in three states and the insurance follows each one separately: working on a site, travelling on a trailer, and occasionally crossing or using a public road. A policy that covers one does not automatically cover the others.
Plant cover for the machine itself
Owned machines are insured under a plant section against damage, fire, overturn, vandalism and theft, either at agreed values or on an indemnity basis after depreciation. Hired in machines are a different question entirely, because the hire contract makes the hirer responsible whatever happened, and that needs a hired in plant section with continuing hire charges. Mini diggers are stolen constantly, which is why theft conditions on this class are specific.
Underground services and what the bucket finds
The expensive liability claim is a strike on a buried service: water, gas, electricity or telecoms, with the damage, the disruption and sometimes an injury behind it. Many liability wordings treat underground services as a separate insured item with its own limit, and some condition cover on obtaining service drawings and using a locator before breaking ground. An operator who digs without that evidence is outside the condition rather than merely unlucky.
Roads, trailers and who is driving
A machine used or crossing a public road needs motor cover for that use, and towing a digger on a plant trailer raises the towing vehicle's weight limits and the driver's licence category. The trailer itself is often uninsured, sitting between the van policy and the plant section. Insurers also ask who operates the machine and whether they hold a recognised competence card, because operator competence is the clearest predictor of both damage and injury.
Theft, security and getting it back
Plant theft is organised and machines are moved quickly. Insurers respond with conditions: immobilisation, keys removed and not left with the machine, secure storage where practical, and increasingly a tracking device on higher value items. Registering the machine on the national plant register helps recovery and is asked about. Where a machine is left on an open site overnight, the security arrangements described at inception are the ones the claim will be measured against.
Questions people ask about digger insurance
Does plant cover include hired in machines?
No. A hired machine is your contractual responsibility under the hire agreement, which needs a hired in plant section including continuing hire charges.
Is striking a buried cable covered?
Often as a separate insured item with its own limit, and sometimes only where service drawings were obtained and a locator used before digging.
Do I need motor cover for a digger?
For use on or crossing a public road, yes, and towing one raises the towing vehicle's weight limits and the driver's licence category.