To obtain van insurance quotes in London, you can start by using comparison websites that specialise in insurance products. These platforms allow you to enter your van details and personal information to compare quotes from various insurers. Alternatively, you could contact insurers directly or consult with an insurance broker for tailored advice. It's also helpful to gather information about your driving history and any modifications to your van to ensure accurate quotes. Remember to review the coverage options and policy terms carefully before making a decision.