We just spent $15,000 on London Underground ads

We are building bot-free ai note taker and wanted to test new channels.

Here's what I learned:

The Setup:

• 250 posters across Central London stations (focused on tech offices)
• Escalators only, people stand still and actually look

What I'd do differently:

• Test your print first. Digital colors ≠ printed colors. Should've done a sample.
• Add a promo code. People photograph posters. A promo code = easy tracking of actual conversions.

The real ROI:
Our campaign runs through the end of November, so too early to judge direct signups.

But the biggest impact so far?
Credibility.

People now see us as an established company, not just another startup. Hard to quantify, easy to feel.

The social media buzz? Way bigger than expected.

Bottom line:
Offline advertising works when you're ready to shift how people perceive your brand.