I've popped into this shop a few times to get greeting cards, and the do have a good selection of off-colour notecards with swears. Because I'm 12 at heart, or something.
They also carry a dizzying supply of brit-specific products - treats and sweets and cakes. I'm sure it's a great resource for expats in the west end.
But, truly - the owner is top notch lovely. I am training a seeing eye-dog pup, and he travels with me most everywhere in his little vest. The owner welcomed us in to the shop warmly, despite the many delicate items he had on display. He brought my dog a bowl of water, which the dog promptly flipped over and spilled accross the hardwood floor.
He laughed, mopped it up, and admonished me to stop apologizing. Nicest. Guy. Ever.