Classic Sourdough from the BBC

So now that I’m following all of these amazing bakers on IG, I’ve been inspired to try different sourdough recipes.  So I tried this recipe for Classic Sourdough that I found on the BBC. 
 
As you can tell from the picture, I did not get that classic, open crumb that sourdough is known for.  And I don’t know why. My starter was active, and I followed all of the instructions perfectly. It was very humid the day I made this, and the dough was very sticky. Was that it? I’d love any advice from my fellow bakers. Or even a reference to your favorite never-fail sourdough recipe.
 
That being said, it was super yummy, and the crust was perfectly crumbly.  It’s almost all gone and it’s still on the cooling rack. My taste testers approve.
 
If any of you want to try this recipe variation for yourselves, here is the link to the BBC’s Classic Sourdough. And let me know how it goes!

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