Just grabbed a promo code from a newsletter but when I tried entering it at deposit nothing happened. Said expired or invalid. Wasted like 10 minutes trying different spots. Anyone know the current best way to apply these codes successfully? Maybe there's a specific page or timing thing?

Yeah promo codes can be picky sometimes. I had one not work last month because I entered it after the deposit went through instead of during. The trick is to paste it in the bonus code field right on the deposit screen before confirming. If it's still not taking try the main site SpinBaraCasino UK — they usually list active ones there or have a promotions section where you can claim directly. My favorite lately is waiting for their weekend reloads; enter the code, deposit min amount, and spins or bonus cash hit the account almost instantly. Just make sure you're logged in first and it's not a first-deposit-only type.