Web giant Google said that the government has 'no access' to its servers either directly, via back door or through a so-called drop box.
The US-run spy programme Prism, has reportedly been used by GCHQ to obtain personal user data, such as emails, photographs and videos, from Internet companies based outside the UK, reports BBC.
According to the report, David Drummond Google's Chief Legal Officer said that the government does not have access to Google servers by any manner.
He further said that all the requests for any user data is provided only in accordance with the law and each request is reviewed thoroughly by the company's legal team for any procedural flaws.
While Microsoft denied any knowledge of such a spy programme aimed at its users, Google refuted any access by the government owing to strict policies.
US President Barack Obama defended the Prism monitoring programme and said that it aimed at a right balance between security and privacy, the report added.