Large leafed climber

Large leafed climber

Observation - Large leafed climber. Description: This plant is climbing, and has the large leaves seen here. It has been in its present spot for at least 4 years but never flowers. Does anyone know what it is, please?

This plant is climbing, and has the large leaves seen here. It has been in its present spot for at least 4 years but never flowers. Does anyone know what it is, please?