Maximum fine limits mean speeders earning over £47,000 won't be hit as hard as those earning less.

House of Commons
Parliament

Brexit Secretary David Davis says the new legislation will be "the most straightforward bill possible to give the decision of the people and respect the Supreme Court judgement".

He stressed, to cheers: "I trust no-one will use it as a vehicle for attempts to thwart the will of the people or to frustrate or delay the process."

House of Commons
Parliament

Brexit Secretary David Davis says the government will be introducing legislation which starts the formal process of the UK withdrawing from the EU.

He says this will be a straightforward bill, that will not be about whether the UK should leave the EU, "because that decision has already been made".

Laura Kuenssberg
BBC political editor

"Phew", a government minister exhaled after this morning's court ruling. 

Certainly, the prime minister did not want to find herself in the position of having to ask MPs for permission to start our divorce from the European Union.

Today's verdict from the justices doesn't take away from the reality that having to go to Parliament before triggering Article 50 is a political inconvenience Theresa May very much wanted to avoid.

Nor does it change the sentiment among opposition MPs, some of whom are determined to try to amend whatever legislation the government puts forward to include guarantees of this or that, to try to force a vote on staying in the single market, or to push for final binding votes on the process when negotiations are complete.

However, the sighs of relief are real in Whitehall this morning for two reasons.

The justices held back from insisting that the devolved administrations would have a vote or a say on the process. That was, as described by a member of Team May, the "nightmare scenario".

The Scottish National Party has said it would not try to veto Brexit, but there is no question that having a vote on Article 50 in the Holyrood Parliament could have been politically troublesome for the government. After the judgement it seems like an unexploded bomb.

Read the rest of Laura's analysis

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Theresa May does not have "a mandate to destroy our country" in the process of triggering Article 50, Labour's former shadow business secretary Chuka Umanna has said.

The chairman of Vote Leave Watch says he does not believe Mrs May "an unelected prime minister has been given a blank cheque to turn the UK into a giant tax haven".

Mr Umanna said he "will be fighting for the best deal in the negotiation process".

But while he does not like the referendum result, he would find it hard to set his face against it by voting against the triggering of Article 50.

"The deal here is a different matter," he said, adding that he wants the prime minister to retain many of the economic benefits the UK gets from being a member of the EU.

House of Commons
Parliament

At the beginning of topical questions, during the Justice questions session, Liz Truss praises the independent judiciary which she describes as the "cornerstone of our rule of law".

She continues that the reputation of the judiciary is "unrivaled" and that Supreme Court judges are people of "integrity and impartiality".

She says the government will respect the decision of the court.

Shadow justice secretary Richard Burgon asks if she will also condemn the attacks on the judiciary.

She replies that she is proud to live in a country with an independent judiciary but also a free press.

House of Commons
Parliament

Conservative Philip Hollobone asks when Polish offenders in British prisons will be transferred back to prisons in their own country.

Justice Minister Sam Gyimah replies that transfer will take place once Polish legal procedures are completed.

Labour's Diana Johnson asks if the number of foreign national offenders will go up or down when the UK leaves the EU. 

Sam Gyimah replies that the EU processes are not the only way foreign prisoners can be removed.

UKIP MEP Nathan Gill accuses the Welsh Government of wasting taxpayers' money on the Brexit court case.

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Scotland's first minister Nicola Sturgeon says "it's a matter of democratic principle" that the Scottish parliament should have a say on whether or not it consents to the triggering of Article 50.

She said she was "disappointed" that the Supreme Court had concluded the UK government "is not legally obliged to consult the devolved administrations" over Article 50.

She said Scotland had long been told the UK is "a partnership of equals", but now it is being "told Scotland's voice isn't going to be listened to".

Ms Sturgeon said this raises "a fundamental question". "Are we happy to allow our future to be dictated by the UK", which has only one Conservative MP in Scotland, "or is it time to take our future into our own hands?" she said.

Laura Kuenssberg
BBC political editor

House of Commons
Parliament

The SNP's justice spokeswoman Joanna Cherry asks if Justice Secretary Liz Truss accepts that the Scottish Parliament's consent will be required for the Great Repeal Bill to become law. 

The Great Repeal Bill would end the EU law's primacy in the UK.

Under the Sewell Convention, the UK Parliament would not normally legislate with regard to devolved matters in Scotland without the consent of the Scottish Parliament.

Liz Truss says the prime minister wants a bespoke deal "that works for the whole of the UK".

• The government has lost its appeal to the Supreme Court over Brexit.
• The court said only an act of Parliament can authorise the UK's departure from the EU under Article 50 of the Lisbon Treaty
• But it said it was for the government to decide what the legislation should look like
• The justices also said there was no legal obligation for the administrations in Scotland, Wales and Northern Ireland to be consulted
• We'll hear from the government shortly, with Brexit Secretary David Davis due to address MPs at 12:30 GMT.

Who are the 11 Supreme Court justices who presided over the government's appeal against the High Court ruling that Article 50 cannot be invoked without Parliament's support?

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Former SNP leader Alex Salmond says a second independence referendum in Scotland was "very likely" if the government rejected its amendments to the Article 50 bill.

He said very few people voted for Britain to withdraw from the European market place, and his party is set to table 50 amendments to the proposed legislation.

Mr Salmond said if the government decides "to bulldoze" the bill through the House of Commons, does "not take on board any of the amendments put forward" or is not interested in the compromise proposal for Scotland "to remain in the single market place and ensure Scottish jobs and prosperity, then I think in Nicola Sturgeon's words 'an independence referendum becomes very likely'."

He added: "If Theresa May throws down the gauntlet, Nicola Sturgeon will pick it up."

Judges at the Supreme Court reject the Scottish government's arguments that Holyrood should get a say on triggering Article 50.

BBC News Channel

Former Conservative attorney general Dominic Grieve said his understanding had always been that the EU referendum was only "an advisory referendum".

Conceding that the government "might have made the position clearer", he said:

He said that nobody was trying to stand in the way of the referendum result, but added that "it has to be done in a lawful fashion and we don't have government by referendum".