The Norwegian Department of Foreign Affairs called up a 15-person emergency team on Thursday following the explosions in downtown London.
Four blasts rocked the London subway during the morning rush hour Thursday. At least 40 people were killed and more than 360 wounded in the terror attacks.
There are so far no reports of injured Norwegians in the British capital, Norwegian Broadcasting (NRK) reported.
There are normally thousands of Norwegian holidaymakers in London during the summer vacation.
Department officials are prepared for being called in from their vacation.
The air traffic between Norway and Britain is operating normally, NRK reported.