Kirtan London a praise-able effort to introduce importance of chanting Krishna name.
This move I believe will undoubtedly spread simply because journey of knowing Krishna begins from chanting his name.

This is so natural that we easily gave up things due to declining results of repetition of any materialistic task.For eg eating one bowl of ice-cream do the initial satisfaction but repeat eating soon starts giving unhappiness which is totally opposite in case of Krishna name chanting.