What do we call 'collard greens' in UK/Ireland?

[BlackAmericanoNoSugar]

They have large green leaves, so some sort of cabbage I guess.

I just call that green cabbage,

Kale or spring greens would be the closest equivalent in the uk

Spring greens.

https://www.sainsburys.co.uk/webapp/wcs/stores/servlet/gb/groceries/sainsburys-ready-prepared-spring-greens-200g?langId=44&gclid=CjwKCAiAnsnjBRB6EiwATkM1XttepZHhVchXvDxk9PboMCbcl6gRZCRoWlclaVnOksft6hqAP0l-kBoC6NcQAvD_BwE&storeId=10151&krypto=g4l%2F5El0OFqoGZrWyspsSJr2dQfhzO714VJfVXqMqpOdQtdqpmYWYvANvP%2F%2Flc3ljgaBqt90LZaaZWxqnayCMsyt7vN7vFHzxX9J0UH9%2BwSijs9qEycn8BFZeuJHeaN9c9mG%2F8km2zYfpvBJa7jXa3lImfwn9MbccqFnYGADabBP10FTcaLOU6f0ULjbgAz4277Jtvs8WzuTXRO%2FIskBA8SbC4nIivZPGPqiC1bHC2F9j1u6jEoyss1JWtBmi2TF71v8Ov2PD87RmabR5YNtsDipwXkr0CRg73J2h7C6adc%3D&ddkey=https%3Agb%2Fgroceries%2Fsainsburys-ready-prepared-spring-greens-200g

Thanks.

As far as I know we don't eat collard greens here!

Spring greens.
I had some yesterday with leeks, green beans and butter they were delicious.

Very similar to spring greens

Collard greens are more bitter but spring greens are similar.