If they grew and did not flower then yes they are taking time to settle in.
As for the wet winter, we were shown some flowering under water and the garden owner fully expected them to survive as long as the soil dries out in Summer.

How deep did you plant them? Discussion on gardeners' question time a few weeks ago suggested that they need to be a lot deeper than you expect.

Which is odd, the ones in our wood are often dug out by the mole and still flower even on the surface.

They didn't all come up at all, about a dozen showed leaf but nothing else appeared just this one flower, I am now also wondering about depth, I suppose I put them in about 4" maybe less, in other words I didn't just cover the bulb it was deeper than that.

How disappointing! Is it possible that something has eaten them? I also bought snowdrops in the green, but this year. 1000 of them! I hope I get better results next year!

Hi, yes I suppose they could have been eaten, I've just bought some more so fingers crossed I have better luck next year, one of the joys/disappointments of gardening I suppose, good luck to you too, please post photos if they all come up.

Thanks Phoebe! Love your dog!

Looking again at the depth. When planting green Snowdrops you should plant them so that the non-green part of the stem is buried, but not any of the already green. Hard to explain really, but I hope you see what I mean. Sounds to me like they were a tad deep. they may well come up next year when they have managed to move themselves up wards to their favoured depth.