Buhari condoles former head of service adamu fika from london

I think there may be some inaccuracies in your statement.

Firstly, the President of Nigeria is Muhammadu Buhari, not "buhari" (lowercase).

Secondly, I couldn't find any information on a former Head of Service named Adamu Fika who has passed away. The current Head of Service of the Federation is Dr. Folasade Yemi-Esan.

Lastly, it's unlikely that President Buhari would be condoling the family of a former Head of Service from London, as the President is based in Abuja, Nigeria.

If you could provide more context or clarify the statement, I'd be happy to help you further.