It is a fair question, and the answer is usually no, or not enough. Home insurance and home contents insurance almost always exclude tools used for work, because that counts as business use, so relying on them can leave you with nothing when you claim. A standard business insurance policy may include a small amount of tool cover, but the limits are often too low to replace a full professional kit.
Dedicated tool insurance is built for the job: it covers the full value of your work tools against theft and damage, including theft from your van, added to your wider business insurance policy alongside your public liability. Remember that your van insurance covers the vehicle itself, not the tools inside it, which is the exact gap tool insurance fills. If in doubt, check your existing policy wording, then talk to us.