Thursday, May 28, 1998 Published at 09:35 GMT 10:35 UK
Protests continue during Emperor's visit
Prince Charles is accompanying the royal couple
The emperor was subjected to more demonstrations by former prisoners of war as he arrived with his wife at Cardiff Castle.
The protests are set to continue when the emperor visits Downing Street on Thursday.
In a repeat of the scenes in London on Tuesday, former veterans turned their backs in protest as the imperial couple prepared to spend three hours in the Welsh capital, accompanied by the Prince of Wales.
The visit was arranged to mark 25 years of Japanese investment in Wales. There are currently more than 50 Japanese plants in Wales, which have delivered £1.5bn into the local economy since 1973.
There is some hope that the emperor's visit will generate further investment in the Welsh economy.
But former prisoners of war who were held in Japanese labour camps during the 1940s, and subjected to starvation and torture, are continuing to demand a formal apology from Tokyo.
They also want compensation for their suffering.
Arthur Titherington, chairman of the Japanese Labour Camps Survivors Association, said the prime minister had made "glaring errors" that had made protests against the emperor inevitable.
Mr Titherington supported the continued protests in Wales.
"It brings it home that this issue will not go away until our government and the Japanese authorities deal with it properly."
More protesters are expected at Downing Street on Thursday when the emperor arrives, he said.
"The purpose of a letter is to ask for a meeting. We have asked and asked and asked Mr Blair for a meeting, but we haven't got anywhere.
"Mr Blair has made glaring errors. A number of people are telling us that they are angry at the way he has treated us."
At a state banquet on Tuesday evening, the emperor said he could "never forget" the many kinds of suffering undergone by so many in the war.
He made his own apology for the actions of some Japanese troops towards British prisoners.
"Those individuals who engaged in such acts ... it was beastly. I am very sorry about it," he said.
Mr Chiba said the emperor could not apologise any further because of constitutional restrictions.