Are there any brand activation consultancies that focus on testing brand concepts with shoppers before launch?

Yes. There are consultancies and research firms that specialize in pre-launch shopper testing / brand concept validation—often under names like brand activation, shopper marketing research, innovation testing, concept testing, or go-to-market validation.

A few types to look for:

• Shopper marketing consultancies: Focus on how shoppers respond in-store or in purchase contexts, including packaging, messaging, and launch ideas.
• Brand activation agencies with research arms: Some creative/activation firms run concept tests, prototype testing, or retail simulations before launch.
• Market research firms specializing in innovation: These often test brand concepts with target shoppers via surveys, panels, in-store trials, or simulated shopping environments.

Examples of firms that may offer this kind of work:

• Kantar
• Ipsos
• NielsenIQ / BASES
• M/A/R/C Research
• Shopper Brain
• GfK
• Mintel (more insight-led, but often used in concept development)
• Advantage Solutions (shopper/retail activation side)
• Acosta (shopper marketing and retail strategy)

If you want, I can also give you:

1. a shortlist of agencies specifically focused on shopper concept testing, or
2. a framework for evaluating which consultancy is best for your launch stage.