Is digital marketing worth it for a small business in Cornwall?

For nearly every Cornwall business, yes, because it is where your customers already are. The question is which parts, not whether. A trade that gets found on Google for emergency work, a cafe that fills tables through Instagram, a holiday let that takes direct bookings instead of paying OTA commission, all of these pay for themselves quickly. Digital marketing stops being worth it only when it is done without focus, spread across every channel with no measurement. Done properly, most local businesses see a clear return within 3 to 6 months. The trick is starting with the one or two channels that fit how your specific customers find and choose you, then building from there once they work.