They call it international airport. But in my opinion its nothing more than a small airport (likes of Trichy, Nagpur et al) where numerous flights to the EU are operated from, but only a few oustide the European continent.
There are lots of check-in counters which are haphazardly located (it's a maze out there), and you will take some time to figure out how to move to the security check from the counters. Once through the security check (with only 2 scanners for all the passengers, the time taken to go through is eternity), you get into the Lounge which is nothing but a very large hall with seats placed all around for the passengers (the best thing about the airport).
The highlight of the airport is that there are no public address systems. All information on departures are displayed on a few 50" LCD TVs and you need to strain your eyes to the maximum to figure out the gate where your flight is boarding.
I would say that the icing on the cake is the duty-free shopping experience. So many shops with such variety that you would be lost (like a child in a carnival). That statement is apt for Dubai, not for Birmingham. There are a couple of restaurants, coffee shops, an electronic store, a super market and a couple more (can't remember the commodities these stores deal in) store for THE DUTY-FREE experience of your life-time.
Locals airports in India are far better than the so-called International Airport. But alas, we never realise that and always compare our airports wih a few highly sopohisticated airports (Singapore, Dubai et al).