Tatvam27
I know someone whose baby was born in the UK. They got their Indian passport here, did not get a UK visa and went to India. They simply had to apply for Entry clearance for the baby before travelling back to UK.
It is safe to take the baby to India without a Visa. Your baby is an Indian citizen and you dont need a visa to exit the UK.
With regards to maintenance of funds,
if you have been in the UK for more than 12 months,
you will need to show £900 (for you) + £600 (for your partner) + £600 for each child
if you have been in the UK for less than 12 months,
you will need to show £900 (for you) + £1800 (for your partner) + £1800 for each child
See page 8 here -
http://www.ukba.homeoffice.gov.uk/sitec ... olicy1.pdf