Greggs’ official nutrition page says their calorie information should come from their own guide, and a nearby matcha reference shows an Iced Matcha Latte at 100 calories per serving. However, I couldn’t verify a specific blueberry matcha calorie figure from an official Greggs source in the information available here, so the safest answer is that it is likely in the same general range as other Greggs matcha drinks but not confirmed.

What I found

  • Greggs says its official nutrition guide is the only source they can guarantee is correct and up to date.
  • A Greggs Iced Matcha Latte is listed at 100 calories.
  • A separate third-party result mentions a Strawberry Iced Matcha Latte at 149 calories, suggesting flavoured versions can vary.

Practical take

If you’re trying to log it, I’d use a placeholder estimate of roughly 100 to 150 calories until you can check the in-shop nutrition guide or the official Greggs menu listing for the exact blueberry version.

Note

Greggs also says recipe and nutrition details can vary by region, so the exact figure may differ by shop.