Convolvulus sabatius 'Fleurie Blue'

Help me identify this plant please - it's a trailing plant that over winters - morning glory has been suggested but not sure if the leaves are right..

I'm thinking morning glory too. It has heart shaped leaves. Google has some good pictures you could use for comparison.

@Sara thank you, I think you are right! The pictures I've googled are clearer than the ones in the encyclopaedia 🍃

Thank you @ukjohnny

Nice colour