You only have to look at Babur's menu (the restaurant though, not the takeaway/home delivery) to see how the LL establishments are practically clones of each other... I have this fancy that at dead of night a huge tanker, like a petrol tanker, inches slowly along LL, stopping at intervals to connect a thick black rubber hose to each curry house and pump a fresh week's supply of "Basic Indian Sauce" into their basements....