Indian DL doesnt allow you to drive in some LHD european countries. They do a lot of chic - chic in greek and i couldnt get a thing.
Plus when I wanted to get my 1 yrs UK driving license which they were giving me free in exchange for my Indian DL but which was valid for 20 years and i would NOT be returned that after a year

so i instead opted to apply for a seperate UK driving licesne which costed me to pass a theory and practaical driving lessons plus a license fee i think it was £115 in total.
But i think if i had my International DL which i could have got from India for like Rs.550 i would have exchanged it for the 1 yr UK license ... So all those people who are coming to UK and planning to drive getting an International DL is a good idea.
Some places they accpet your Indian license but say for instance you want to rent a Ferrari ... ok BMW for a day they wouldnt ... well most of the rentals wouldnt.
cheers,
ash