Details of the unannounced trip were not made known at press time by officials of the presidency.
The venue of the two leaders' meeting in London was not disclosed, but a tweet by Senior Special Assistant on Media and Publicity, Laolu Akande on his handle last night indicated that Osinbajo met with President Buhari in London and was expected to return to Abuja immediately.
Buhari had two months ago travelled to London for an undisclosed medical follow-up with his doctors in that country.
The development has continued to heighten the political atmosphere in Nigeria with uncertainty surrounding his date of return.
Meanwhile, Osinbajo had earlier attended the Presidential Quarterly Business Forum which held in the Banquet Hall of the Presidential Villa, Abuja.
At the Presidential Quarterly Business Forum held in Abuja, yesterday Osinbajo assured Nigerians of an expected turnaround in the economy in the next 12 to 18 months with renewed government focus .
According to him, the Muhammadu Buhari- led administration is poised to deliver on the promises it made to the people.
We have the discipline to be able to do so, but this is a complex environment, it is a complex economy and I think that we must trust the government.
I have said it repeatedly that in some sense, we are fortunate to have a leader like the president who, at least we know, is straightforward and honest, and committed to ensuring government money is spent the way it should be spent, and that people don't do what they like.
To that extent, I think we have the right environment at least in terms of government discipline to be able to deliver on the promises that we have made. We say to the private sector that we have enough willing and able partners.
According to Osinbajo,
I believe very strongly that Nigeria will turn around. I have no doubt in my mind that if we are focused, even in the next 12 to 18 months, we will certainly see a turnaround. I want you to join us in being able to ensure that this happens to the Nigerian economy.