Did you plant them with the top half of the bulb out of the soil? They do need to have the bulb baked to initiate flower bud development.

Yes I think they are but will check in daylight. We've had quite a good summer up here but whether they have had enough sun ??

Mine are in pot in a SW facing corner so don't get the sun until late morning but they flower well every year. They like a well drained spot so perhaps perhaps they might do better in a pot? You might have to protect it in winter up in Yorkshire.

I think I'll move them to a pot but when would be the best time now or in the spring.

Best time is when they are dormant.

mine are against a wall and until I kept the foliage from other plants away they never flowered. these last 2 years I have deliberately left the are less planted and I now have flowers. It is unusual to get leaves at this time of year, are they not the beginning of the flower stalk?

I grow mine in the gh, too cold outside some years

Thanks for replies. It's definitely foliage, but I think they were shaded so I'm going to move them for next year probably into a pot.