The prime ministers said their countries enjoyed warm relations Enlarge Image

Mr Singh is in London on the opening leg of his six-day visit to Europe.

After meeting at Downing Street, the pair said that they would work together to fight terrorism and expand economic, scientific and educational links.

Train bombings in Mumbai (Bombay) killed more than 200 people, a year after 52 died in bombings in London.

'Terror threats'

The British prime minister said both countries had experienced terrorism, and it was important that both work together over the issue.

Mr Singh welcomed the "strengthening strategic partnership" between the two countries, pointing out that both faced "common terror threats".

Mr Blair visited India last September

Both leaders condemned recent nuclear tests carried out by North Korea.

Officials say the two sides discussed better protection of sporting venues, and ways to combat extremism.

Mr Blair said that he was "pleased" with the state of Anglo-Indian relations.

He said that half a million Indians visited the UK every year, and that Britain was the third largest investor in India.

Nuclear fuel

He said that it was important that both countries also work closely together over the issue of climate change.

Both our countries have experienced terrorism...and it is important we co-operate Tony Blair

Earlier the Indian prime minister said that relations between the two countries were stronger in areas such as energy, science and technology and research.

After meeting Mr Blair and other ministers in London, Mr Singh will travel to Finland for a two-day summit with European Union leaders.

Indian officials say Mr Singh will discuss India's search for sources of nuclear fuel for civilian purposes before he leaves Britain.

Foreign Secretary Shiv Shankar Menon said India would be sharing the findings of its investigations into the July train bombings in the western city of Mumbai (Bombay).

"Counter-terrorism is an issue we have been discussing with the European Union and the UK," Mr Menon was quoted saying by the AFP news agency.