Mr. Pearse is the author of the legal textbook A Guide to Breathalyzer Certificates in Canada, which is published by Canada Law Book. Mr. Pearse has been practicing law since 2000. His practice is 100% DUI Law, and he has offices in Calgary, Red Deer, Edmonton, Saskatchewan, Toronto, and Winnipeg. Alan takes DUI files in other provinces and is able to accept files from anywhere in Canada except Quebec.