This is our Mayleen clematis in a big tub next to our front door. The front of the house is North facing so doesn't get much sun. But it's doing very well. I'm training it to "cascade" over the front door, but some bits are more cooperative than others, but it'll get there in the end.
It shares the tub with a new clematis, "Justa" I bought in Sainsbury's a week ago for £7. It's growing rapidly and I'll train it along the wire under the ground floor bay window.