ENERGY bosses today insisted security was not compromised when protesters blocked a private road leading to the Sizewell nuclear power station.Four people had staged the two-hour blockade on Saturday morning to highlight the threat terrorists could pose if the nuclear industry was expanded.

ENERGY bosses today insisted security was not compromised when protesters blocked a private road leading to the Sizewell nuclear power station.

Four people had staged the two-hour blockade on Saturday morning to highlight the threat terrorists could pose if the nuclear industry was expanded.

Demonstrators said they stood a few hundred metres from the plant at Sizewell for 15 minutes without being challenged.

The group staged the protest days after plans were announced for a new generation of nuclear reactors in England - including a Sizewell C.

Police said no arrests were made and the demonstrators - three women and one man - agreed to leave after negotiations.

A British Energy spokesman later said: "Security was not compromised. Everyone is entitled to demonstrate peacefully but we are engaged in a larger debate with the country and the Government about energy and the way we go forward.

"British Energy has a vital role to play in low carbon electricity generation.'

The four were fastened together by concrete filled tubes attached to arms, and they said they wanted to spell out the dangers of nuclear expansion to Prime Minister Gordon Brown.

"We were 200 metres from the reactor if that. If we can do it so can terrorists. Imagine that. We didn't get inside the fence. But protesters have done that before, said protester, Mell Harrison, 36, of Bungay.