Contact Us

Mark A Wales Chartered Professional Accountants is an experienced accountant having offices in Simcoe, St. Thomas & London, Ontario. View our Tax & Accounting Services.

St. Thomas Location:

Address: 190 Centre Street St. Thomas, Ontario N5R 3A4

Phone: (519) 637-0700
Fax:  (519) 637-0919

St. Thomas Hours

Monday to Thursday - 9:00am to 5:00pm
​Friday (Mar and Apr) - 9:00am to 5:00pm
Friday (May to Feb) - 9:00am to 12:00pm
​Saturday & evenings - By Appointment Only

London Location:

Address: 526 Oxford Street East London, Ontario N5Y 3H7

Phone: (519)679-9550
Fax:  (519) 679-9552

London Hours

Monday to Friday - 9:00am to 5:00pm

Simcoe Location:

Address: 10 Argyle Street, Simcoe, ON N3Y 1V5

Phone: (519) 512-0471
Fax:  (519) 512-0501

Simcoe Hours

Monday to Friday - 9:00am to 4:30pm
​By Appointment Only

Leave this empty:

First Name *
Last Name *
Phone *
Your Organization (if any)
Please provide us with any questions/comments you may have here... *