In London to shoot for the last schedule of 'Teen Patti', Amitabh completed five scenes at an 'exotic casino' with the Oscar-winning star.
'(It's)...a joy really to be working with a crew that respects efficiency and time and a colleague who is professional to the core,' Amitabh wrote on his blog www.bigb.bigadda.com.
'It's been a joy to work with Sir Ben. He is generous and polite, prepared and competent and cooperative with every breath. It is no wonder then that we have finished what would have involved us all for several more days,' he added.
Directed by Leena Yadav, 'Teen Patti' features Amitabh as a professor who tutors five of his brightest proteges in gambling.
Commenting on the difference in the looks of his character vis-a-vis that of Kingsley's in the movie, Amitabh wrote: 'We are elder academicians; me more than him. I'm a math professor, generally known to be absent minded, hesitant in public and not generating too much care on clothing. Sir Ben is greatly more smooth and suave in the film.'