It made the plea on Tuesday in a statement by its National Publicity Secretary, Mr Kola Ologbondiyan.
President Buhari is the president of the whole of Nigeria and therefore once he is being attacked and abused by people, his counterparts outside the country, we must defend him, we must reply.
Britain and Nigeria signed a security and defense agreement during a one-day visit by Prime Minister Theresa May on Wednesday as Africa's most populous country struggles to defeat Boko Haram extremists and others linked to the Islamic State organization.
Chief Edwin Clark, Former Federal Commissioner for Information and South South Leader, has lambasted America's president Donald Trump for describing President Muhammadu Buhari who was his visitor at the White House in April as lifeless.
The defense aid includes more training and equipment for Nigeria's military, which has been criticized by human rights groups over alleged abuses that it denies.
"We are encouraged by the fact that the United Kingdom is one of the largest foreign investors in the South African economy with more than 650 British firms present in the market".
The UK IS planning an outlay of £8 billion (R146.36bn) in Africa in the next four years and South Africa has set its sights on being the biggest beneficiary of the investments.
"By 2022, I want the U.K.to be the G7's number one investor in Africa, with Britain's private sector companies taking the lead in investing the billions that will see Africa's economies grow by trillions", said May.
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According to The Fader , she also addressed internet rumors that she's feuding with Scott's daughter Stormi . "Yes we do. You got your fucking homeboy talking for you and you got your girlfriend selling tour passes.
The delegation will land in Cape Town today, where May will meet South African President Cyril Ramaphosa as well as business leaders and young people.
Last week, British finance minister Philip Hammond warned a no-deal Brexit could have "large fiscal consequences" on productivity and borrowing.
"We're bringing the ambition and the substance of our white paper on the future relationship and also I think some pragmatism to try and go the extra mile to get the deal that I think is in both sides interests".
May admitted that it "wouldn't be a walk in the park" if she failed to secure a deal with the European Union, but attempted to draw comfort from a comment made last week by Roberto Azevêdo, the director general of the World Trade Organisation.
Stressing the historic ties between France and the UK, Mr Lidington said the countries must also pull together "because the foundations of the world order that we forged in the aftermath of war are creaking".
The disgraced former defence secretary had previously said that a post-Brexit deal with the European Union would be "the easiest in human history". "The challenges facing Africa are not Africa's alone", she said.
Prime Minister May in response welcomed the assurance by the Nigerian government on credible elections in 2019.