But the box didn't have the right paperwork.
The story of how a young British customs officer foiled a Nigerian kidnapping:
On a summer's day, Mr Dikko walked out of his front door in an upmarket neighbourhood of Bayswater in London. Within seconds he had been grabbed by two men and bundled into the back of a transit van.Read how the plan was foiled: The foiled Nigerian kidnap plot, BBC Magazine>>
"I remember the very violent way in which I was grabbed and hurled into a van, with a huge fellow sitting on my head - and the way in which they immediately put on me handcuffs and chains on my legs," he told the BBC a year later.
Mr Dikko had been minister for transport in the government of Shehu Shagari until it was overthrown by the military at the end of 1983. He fled to London accused by Nigeria's new rulers of embezzlement - a charge he has always denied.
Labelled "Nigeria's most wanted man", a plot was hatched to get both him and the money back.
The extraordinary plan was to kidnap Mr Dikko, drug him, stick him into a specially made crate and put him on a plane back to Nigeria - alive.