Conservative MP Rory Stewart has been elected the new chair of the House of Commons Defence Select Committee, taking over from fellow Tory James Arbuthnot.
Mr Stewart, who represents the Cumbria constituency of Penrith and The Border, has served in the army and the diplomatic service, along with running a charity in Afghanistan.
The House of Commons Speaker has criticised the "histrionics and cacophony of noise" during Prime Minister's Questions, saying it puts MPs off contributing.
John Bercow, who is responsible for maintaining order in the Commons, said Parliament was "spray painting its own shop window" by appearing to generate higher decibel levels than Deep Purple.
He said that despite recognising that behaviour must improve, the party leaders had yet to make a specific commitment to help do so.
BBC Radio 4's PM programme said Mr Bercow told them that "seasoned parliamentarians" boycotted PMQs out of embarrassment and that some female MPs did not want to take part in the session.
Meryl Streep, who won an Oscar for her portrayal of Margaret Thatcher, will be part of the first major film to be shot in Parliament.
Commercial film-makers have always been denied entry, forcing producers to build replicas of the home of British politics.
But MPs have allowed Suffragette, which follows the struggle for women to get the vote, to be shot in the historic chambers over the Easter recess in a bid to raise revenue.
Streep, who played Lady Thatcher in biopic The Iron Lady, will reportedly play another dominant figure in 20th Century politics, feminist trailblazer Emmeline Pankhurst.
British stars Carey Mulligan, Helena Bonham Carter and Ben Whishaw also have leading roles.
A road next to the Houses of Parliament has reopened following a security alert which saw officers stop traffic with a police cordon.
A Met Police spokeman said the cordon was initially in place while officers responded to reports of suspicious package.
Supporters of the hacking group Anonymous are clashing with police in parliament square.
Thatcher's former cabinet minister Norman Tebbit paid an emotional tribute to his old boss and friend in the House of Commons today.
He spoke movingly of the support she provided his family after he and his wife were injured in an IRA bomb attack at the Grand Hotel in Brighton. He praised her courage and popularity, and reflected on her demise, saying:
"I left her, I fear at the mercy of her friends, that I do regret."
Former Tory minister Michael Howard praised Baroness Thatcher for her taking on the unions and "saving our country." Speaking in the House of Lords he said:
"She saw what needed to be done, and she did it with clarity, with courage, and with conviction."