Contact Us

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

St. Thomas Location:

Address: 367 Talbot Street, St Thomas Ontario N5P 1B7
(the old RBC Building)

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

St. Thomas Hours

Monday to Friday - 8:30am to 5:00pm
​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 - 8:30am to 4:30pm
​​​​​​​Saturday & evenings - By Appointment Only

Simcoe Location:

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

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

Simcoe Hours

​By Appointment Only

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