A lot of us on our allotment site are suffering from the same, Mrs B, so I don't think it's just you. A few of my carrots have finally appeared, but are just sitting there and not growing on. The parsnips are still a complete no-show. Beetroot seems very reluctant, and radishes are taking for ever to start to bulk up. Runner beans are, however growing away nicely, and cabbages and sprouts are flourishing although the caulis and broccoli seem to be static.
I dare say it will all sort itself out as the season goes on.