Effective December 12, 2007, the government will require all visa applicants from India to undergo finger scans and take digital photographs at the VFS Visa Application Centre.

The new requirement follows the introduction of biometric data collection at British representations around the world.

Because of the new requirements, applications will now take longer to process. With the introduction of biometrics to India, however, nationals of that country will now be able to apply for longer-term visas to the UK.

The UK Visa Application Centres are located in 12 locations across India, including Ahmedabad, Bangalore, Chandigarh, Chennai, Cochin, Delhi, Hyderabad, Jalandhar, Kolkata, Mubai (north and south) and Pune.

Source: http://www.littlerglobal.com/index.cfm?event=GMIDetails&pubitemid=803#emea4