Proudly Serving Ontario Since 1989

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About Dorchester Insurance Brokers Ltd.

We are an independent, locally owned insurance brokerage located in Dorchester, Ontario.

Locally Operated

Our story began in 1989 when Dorchester Insurance Brokers Ltd. was founded by Brian Wallace and Ken Thornton.

Now under second-generation management, the team at Dorchester Insurance Brokers Ltd. continues to provide professional, friendly, and highly personalized service to families and businesses across Ontario.


Family Oriented

In 2002, Ken’s son Derek joined Dorchester Insurance Brokers Ltd., followed by Brian’s son Owen in 2008.

As a family-oriented business, we value maintaining personal relationships with our clients and the insurance partners we work with every day. No matter your specific situation, we are on your side and ready to listen so we can help you find the very best coverage.


Community Involvement

We are proud to be from Dorchester, Ontario, and have operated as a locally operated brokerage here since 1989. As a company, we are deeply invested in our community and proudly support local events, groups, and initiatives.

We proudly support local community events and organizations, including the annual Dorchester Fair, Dorchester Minor Hockey Association, Dorchester Minor Soccer, Dorchester Dolphins Jr. C Hockey Team, Dorchester Minor Baseball, and Dorchester Ringette.

We are also proud members of the Insurance Brokers Association of Ontario (IBAO) and the London Insurance Brokers Association.

Meet the Team


Derek Thornton headshot

Derek Thornton

INSURANCE BROKER & MANAGING PARTNER

  • Derek Thornton grew up in Dorchester and attended Fanshawe College. After earning his Business Insurance Diploma in 2002, Derek obtained his Registered Insurance Brokers of Ontario (RIBO) license and joined Dorchester Insurance. He completed his Chartered Insurance Professional (CIP) designation in 2008.

    Derek lives in Dorchester with his wife, Katie, and their daughter, Rylie. An avid sports fan, he enjoys watching baseball, hockey, and European football. In his spare time, he likes playing sports, travelling, reading, and spending time with family and friends.

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Owen Wallace headshot

Owen Wallace

INSURANCE BROKER & MANAGING PARTNER

  • Owen Wallace grew up in Dorchester and attended Fanshawe College. After earning an Honours Diploma from the Legal Assistant program in 1995, he obtained his Registered Insurance Brokers of Ontario (RIBO) license in 1998. Since then, he has worked as an insurance broker and earned his Canadian Accredited Insurance Broker (CAIB) designation in 2002. He joined the team at Dorchester Insurance in April 2008.

    Owen lives in Dorchester with his wife, Rebecca, their son, Isaiah, and their daughter, Lyla. An avid sports fan, he enjoys watching baseball, hockey, football, and basketball. In his spare time, he likes fishing, reading, listening to music, playing golf, traveling, and spending time with family and friends.

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Mike Dennis

CUSTOMER SERVICE BROKER

  • Mike Dennis grew up in Ingersoll and attended Sir Sandford Fleming College. Mike has been a licensed insurance broker for over 15 years and joined Dorchester Insurance in November of 2024.

    Mike lives outside of Belmont with his wife, Emma and their son Mike Jr. In his spare time, he likes to work on cars, reading and listening to music and spending time with his friends and family.

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Why Work with Us?

Access to Top Insurers

Over the past 30 years, we have cultivated strong, long-standing relationships with some of the top insurance companies in Canada.

When you work with us, you not only gain access to this network but also benefit from our ability to collaborate with multiple insurers to secure the best possible deal.

Personalized Approach

We’ve been around long enough to understand that every family, business, and situation is unique. That’s why we proudly take a personalized approach to customer service.

Drawing on our extensive industry knowledge and experience, we are committed to finding the right solutions to meet the specific needs of our clients.

Coverage & Peace of Mind

At the end of the day, we want our clients to enjoy the peace of mind and security they deserve. The insurance market can be difficult to navigate alone — let one of our licensed professionals help you find the ideal coverage for your family or organization.

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Get a Free Quote Today!

Your Neighborhood Brokers
Independent and locally owned – we’re not just invested in this community, we’re invested in the people who live here. When you’re ready to chat about insurance, our brokers are here to listen.

Bundle and Save
We understand that every penny counts! Insure multiple properties or combine your home and auto to get some great savings.

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Looking to Switch?
If you feel like you’re not getting the most out of your current insurance plan, don’t worry. We can help you shop and switch to something that works better for you and your family.

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We’ll Shop For You
We love finding not just great deals, but the best deals since we work with all major insurers.

Let one of our brokers shop multiple insurance providers for you.

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  • "We've been very satisfied with Dorchester Insurance Brokers and would recommend them to anyone looking for amazing customer service, immediate responses to any concern, and always the best rates. They have gone above and beyond to make sure we are covered for our farm needs and conduct detailed annual reviews to evaluate any changes. We’re long-time clients, with over 40 collective years between my wife and myself."

    — Jason & Julia R. | Clients since 2004

  • "I have been a client of Dorchester Insurance Brokers since 2009 and am very satisfied with the service I receive from my insurance broker. He provides valuable advice to ensure my family has the coverage we need at a great price. [They are] accessible, responsive, and proactive. I highly recommend Dorchester Insurance Brokers."

    — Christin F. | Client since 2009

  • “All of my insurance needs are taken care of here, the service and friendliness of this office is second to none. Great customer service is hard to find these days, and Owen and Derek are amazing to work with personally and professionally!”

    — Rebecca W. | Client since 2003