Jono, I'm totally confused mate 🤕
I know you said the answer was fairly easy but, alas, not for me. I went to Boatman's puzzle 29,714 to get the answer and, while there are several clues relating to 'architects', this isn't one of them!
You mention it's pertitent to tomorrows puzzle so is that where you saw it and, if so, how?
In short, I can't solve the clue and don't know what crossword it's in, or how it relates to a future puzzle (Prize?)...
... but, other than that, everything's hunky dory 😂