In the wake of the Tunisia terror attack, the UK Metropolitan Police will carry out the UK's biggest counter-terror exercise.
SAS soldiers and 400 regular troops will take part in Operation Strong Tower; a drill to test the response to major terrorist attacks.
A number of suspected accomplices have been arrested over the Tunisia terror attacks and the Government's crisis response committee, COBRA, meets today.
There will be a national minute of silence on Friday at 12pm.
Prime Minister, David Cameron said, "together we will prevail" against terror.
From the terror in Tunisia has emerged tales of heroism, bravery and survival.
Paul Short has been described as a hero after running into the gun fire to help a man who was bleeding to death.
Paul and wife Sarah are now safely home in Northumberland.
Paul said, "I didn't even ask him his name, I was that concerned that he was bleeding... the gunman was just around the corner, not even 50 meters from us."
The Education Secretary, Nicky Morgan, tells schools that "satisfactory is not good enough" when it comes to grades.
Secondary schools who repeatedly fail to ensure that more than 60% of pupils get 5 A-C GCSEs will be ordered to improve.
Nicky Morgan will warn that any school classed as 'coasting' will have three years to improve or face becoming an academy.
Four British tourists seriously wounded in the Tunisian massacre have returned to home soil.
An RAF jet touched down in the early hours of this morning in Birmingham and then Brize Norton.
Some of the injured are being treated at the Queen Elizabeth Hospital in Birmingham.
The Met Office has issued a health warning as temperatures are predicted to reach mid-30s on Wednesday.
High temperatures caused by a hot plume of air from Africa means Britain is expected to be hotter than Brazil and Florida.
Public Health England advise people to try to stay out of the sun between 11am and 3pm and for vulnerable people to stay indoors.
As players prepare for the second day of Wimbledon, fans all over the UK are getting excited for Andy Murray's first match of this year's tournament.
The atmosphere is hotting up and so is the weather. Murray features third (he is expected to play at 6pm) on Centre Court later today and he's up against Mikhail Kukushkin, who is ranked 59 in the world.
Time will quite literally stand still overnight. An extra sliver of time - a leap second - is being added to the clocks around the world to adjust to the inaccuracy of the spinning Earth. The pause will take place just before midnight tonight.
So how are you going to use your extra second today? An extra moment's sleep? Say a vowel out loud?
The Education Secretary tells schools, satisfactory is not good enough. Is this putting teachers and students under unnecessary pressure?