Rosehips- not sure why birds haven't eaten these- maybe there's nowhere for them to perch. Tidy gardeners might have pruned their roses already, but I like the look of the hips, and there's plenty of time for pruning- any time before the roses start putting out a lot of new shoots is fine. Roses are much more resilient than people think - you can cut them down quite dramatically if necessary and they'll be fine. More on roses when the weather's warmer- but if you want to plant some, then this is a good time to get them settled in.
Globe artichoke- seems to have been preserved by the cold- looks almost like something found in an ancient Egyptian tomb. Hoping the globe artichoke plants will survive the winter - they're messily wrapped up in straw and old cardboard. Foxes investigate everything here anyway so there's not much point trying to do it neatly- practical is better. The globe artichoke is that rare beast- a vegetable which (frost and cold permitting) comes back every year. It dies down in the winter (like lots of flowering plants), then shoots up again and starts making big thistle like leaves and flower buds - those are the edible artichokes. If you don't cut them off and eat them they open into wonderful purple flowers (like giant thistles) which bees and butterflies will feed on.
Iris Reticulata - wonderful colour, always amazes me by suddenly appearing in full flower when I hadn't realised it was doing anything. Unlike a lot of bulbs it comes up reliably year after year. If you didn't have any this year, plant some in a pot in the autumn for next year.