South Bucks politicians have spoken out after a shocking terrorist attack which left four people dead and dozens injured outside Houses of Parliament yesterday (Wednesday).

Wycombe MP Steve Baker condemned the “senseless” attack, which ISIS today claimed responsibility for, paying tribute to brave PC Keith Palmer for “laying down his life in the defence of others”.

He said: “The mood in Parliament is sombre. We are acutely aware of the people who died, the seven injured people in a critical condition and the dozens more recovering from their injuries.

“We are profoundly grateful to PC Keith Palmer for laying down his life in the defence of others as our hearts go out to his family.”

Mr Baker spoke about the moments before the attack, telling the Bucks Free Press he was working on a speech when it happened, with Parliament was in lockdown for several hours.

He said: “I learned of the attack when a colleague sat next to me and said he had just seen a man shot by police. The vote was stopped and we were locked securely in the Commons.

“My staff and I kept in touch by social media, ensuring our families were reassured.”

However he said the attack was “not unexpected” given the severe threat level the UK has been under.

The chief of police for the Thames Valley revealed there will be a security review across the region following the horror attack.

Chief constable Francis Habgood urged anyone with concerns, or anyone who sees anything suspicious, to report it immediately, with Mr Baker encouraging residents in his constituency not to be afraid.

He said: “People in Wycombe must not be afraid. A review is to be expected in all our interests.

“We must stand tall and never surrender to those who would have us live in fear and anxiety.”

Amersham and Chesham MP Cheryl Gillan also praised emergency services, saying she was grateful to everyone who responded quickly to keep Londoners safe.

She said: “First and foremost my thoughts are with the families of those victims of yesterday’s attack. Especially, I think about the family of the police officer who died so bravely in the line of duty.

“The police officers who work at Westminster would say that they are just doing their job, but they are protecting democracy and their families in consequence are on that line too.

“A beautiful spring day turned to horror, but the police, the emergency services, the passers-by who sprang to help those who suffered terrible injuries reminded us that there is far more good in human beings than evil.”

Mr Baker added: “Parliament meets as usual. As the Prime Minister said, our resolve will never waiver in the face of terrorism.

“At moments like this, people show the best of themselves through their care for one another in times of need.

“It is a generosity of spirit we should all hold onto in our daily lives.”