I would think that any of those that only grow to 6 or 8' should be okay, Annella.
Look up these to give you an idea of shorter ones .........
Hagley Hybrid, Petit Faucon, Arabella, Princess Diana, Alice Fisk, Lagoon.

Thanks Louise. Any ideas on best compost to use?

Now there you've got me !
Bamboo's around somewhere, she'll be able to help better there Annella.

Did I hear my name?! First thing is you need as large a pot as you can manage, and preferably a deep one - so make them a minimum 2 feet deep (3 feet's much better though) and 12 inches wide. For compost, as long as weight isn't an issue, I'd use a mix of John Innes No. 2 and some good multi purpose compost, roughly a third multi purpose to 2 thirds John Innes, though half and half will be fine too. And I'm sure you know the pots should be shaded to keep the roots cool.

Thanks Bamboo that was quick!! The pots will go in the shady area next to my garage (-:

Remember that the flowers need to be in the sun though. If you can't provide much sun, use Nelly Moser, Niobe, Hagley Hybrid

florida Sieboldii does well in a pot.

Annella, you might also consider the early flowering alpina and macropetala cultivars, also the later flowering viticellas are good, and all are adaptable to any position.

Hi Annella :)
I grow most of my clematis in pots, apart from the rampant, evergreen Clematis Armandii.
I use multipurpose compost with added chicken manure in the pots,....then top dress them twice a year with an extra dose of chicken pellets, mixed with fresh compost.....and mulch the surface with gravel, to keep the roots cool.
As long as you are prepared for the watering, and feeding, then most varieties will do well in containers...apart from the vigorous ones, such as the montanas and C. Armandii.

Will you be getting any Chicken manure for Christmas again this year Di?

Lol....course I will Heron xx

Thank you all ((-: