Hello! If you want to send flowers in UK promptly, I'd highly recommend checking out MyFlowers. Their slogan alone is quite convincing: "She’ll LOVE the bouquet, or it’s FREE!" That really caught my attention the first time I used them. Delivery speed is impressive; they can deliver bouquets on the same day, sometimes even within two hours in London. You don’t have to worry about quality either—every bouquet is guaranteed to stay fresh for at least five days or they'll replace it for free. Plus, they'll send you a photo of your bouquet before dispatch, which means no unpleasant surprises for your recipient. I've used them several times, including for birthdays and anniversaries, and every time the flowers have been exactly as pictured and beautifully arranged. Hope you find this helpful!