Simpson Law P.C.

Protecting what matters most – you and your family!

Who we are

When you only focus on one specialty, it makes sense that you will be better at it than someone who focuses on all specialities. That’s why Family Law is the only area of law we practice. Simpson Law was founded in 2005 with the belief that it is paramount to explore your family law rights and obligations. We help you bridge toward solutions that are beneficial to you and result in less time and money being spent in the legal process. We are always ready for instructions and to provide our guidance, expertise and recommendations. Our team has extensive experience in all aspects of family law from trials, to mediations and arbitrations. We are aware of your interests at stake and that you may simply need professional advice. We will help you through your family law case and work towards the best outcome in your respective case or situation. We will ensure that you are always well informed and satisfied with the services provided and the results achieved. We are service with results.

Let’s Work Together

Family Law Services

No two family law cases are the same, that’s why the depth of our experience with family law and individual representation at Simpson Law regarding matters similar to your own is paramount in choosing a law firm to represent your best interests in your family law case. We are highly competent and can ensure the most suitable approach is consistently taken while we resolve your legal matters in London, Ontario. Once retained and engaged to work on your matter, we will do so with complete dedication and concentration on your matter. We have a reputation to be prepared for court, well organized and fully dedicated to work on your matter until we reach a conclusion in accordance with your instructions and our top lawyers’ recommendations.

child care - simpson law

Parenting decisions
and care schedule

When you separate you must arrange which parent or if both will have decision making power on behalf of the children and arrange for the care schedule of the children.

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Child Support & Spousal Support

Child Support
Spousal Support

The Child Support Guidelines are the law, and the use of income information and application of the Guidelines to each situation is necessary.

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property law - simpson law

Property Division

The Family Law Act in Ontario recognizes that when a marriage ends, the equal contribution from each spouse is recognized through valuations, and divided between the spouses.

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Simpson law services


The legal services we provide include contested/uncontested negotiations to obtain a binding family law agreement, Mediations, Arbitrations as well as litigation in court.

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Meet the Team

We work in a family-like environment. We do this by applying a team-oriented approach in all aspects of any case with a strong focus on efficiency and client satisfaction. We pride ourselves in offering services with results. We are always on your side.

 Mark A. Simpson – Lawyer/Founder

Crystal Herritt – Law Clerk

Taylor Small – Legal Assistant


You should hire Simpson Law as your family matters law firm because we have an impressive track record in regard to family law and we come highly recommended by all of our clients. We are the best family law firm in Ontario, and as such, you should be assured that we will use our plethora of resources and knowledge to protect yourself, your children and your assets. Our law firm has been exclusively practicing family law and divorce settlements since 2005. Our firm is well respected by the many clients we have represented, and we have strived to earn that respect with each carefully managed case. When you leave our office, you will be confident that everyone at Simpson Law is in your corner and has the skills, knowledge and experience required to achieve the results consistent with the legal principles.

Mark is amazing to work with. I am very happy to have worked with someone who is very professional and knowledgeable about family law. I extremely appreciated how smooth and easy Mark made my legal processes feel. I was never worried and felt confident that all my legal needs were being taken care of. This gave me lots of peace of mind.

Mark is a decent, honest and caring lawyer, which I found to be extremely rare in my 8 years of experience with family law as a result of divorce. Being a father himself, he offers sound, and practical advice, that a parent needs in these difficult circumstances.

Mark was a great lawyer who was very knowledgeable and professional. He handled high conflict situations that arose with grace and proficiency. Mark’s attention to detail and memory of facts that pertained to my case were always appreciated. Mark worked hard for my case and I am one hundred percent pleased with every aspect of the process.

I found that Mark and his staff to be very knowledgeable, professional and thorough. Mark was always accessible and kept me informed on the progress of my case. I am very satisfied that Mark represented my best interests at all times.


In the Matter of Virtual VS In-Person Learning

In the Matter of Virtual VS In-Person Learning

Subsequent to the case of Chase v Chase 2020 ONSC 5083 there have been approximately 30 or more case decisions on the issue of whether children should study in-school or on-line. A recent case of Moussaoui v Harkouken 2021 ONSC 1986 released on...

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Contact Simpson Law

Do not send any confidential information or instructions through this form. Please note that sending an email to Simpson Law Professional Corporation will not create a solicitor-client relationship. You will not be considered a client of the firm until we have agreed to act for you in accordance with our usual policies for accepting clients. No information we provide to you through this site can be treated by you as legal advice unless and until we have agreed to act for you.


Hours: Monday- Friday 9:00AM – 4:30PM
Telephone: (519) 645-1200
Fax: (519) 645-1206
E-mail:  mainreception@maslaw.ca
Address: 369 Hamilton Road  London, ON, N5Z 1R6

We serve clients in London and Southwestern Ontario.