Ingersoll is about 30 minutes east of London on the 401, close enough to meet in person.
It sits between London and Woodstock, and that affects who you compete with online. Someone in Ingersoll who searches for a roofer or a physiotherapist will see businesses from all three places. Google decides which ones to show partly on how clearly each business says where it works.
So that is where we start: a Google Business Profile with Ingersoll and the nearby part of Oxford County as the service area, a website that names the town and the services you want to be found for, and Google Ads limited to the area you can serve.