Here are the top business stories making the headlines in the morning newspapers.
No second Scottish referendum - Truss
Liz Truss has pledged that there will be no second referendum on Scottish independence "on my watch", as she vowed to strengthen and defend the Union.
The Foreign Secretary told the Telegraph she would refuse to authorise a fresh poll if she wins the Conservative leadership contest.
Her refusal to countenance a second referendum at any point if she becomes Prime Minister appears to go significantly further than Boris Johnson's earlier rejection of a second poll simply on the basis that now was "not the time".
Ms Truss stated: "Scottish Nationalists accepted that their referendum was a once in a generation opportunity, and I will hold them to that."
Sunak plans biggest Income Tax cut in decades
Rishi Sunak has promised the biggest Income Tax cut in 30 years, vowing to slash the basic rate from 20% to 16% if he becomes prime minister.
The Telegraph says he pledged to deliver the change by the end of the next parliament.
Mr Sunak's campaign argued that the move was consistent with his previous stances, given the tax cut would only be adopted once inflation drops and would not be funded by borrowing.
Octopus Energy wants taxpayer cash for Bulb move
Octopus Energy is seeking £1billion in taxpayer funding to take over collapsed rival Bulb from the UK Government.
Bulb, which went bust last November, is currently being run by the state through the energy regulator Ofgem.
The £1billion funding is part of a package being discussed where Octopus would also pay more than £100million for Bulb's customers as well as entering a profit-sharing deal with the Government.
The BBC says the Government declined to comment "due to commercial sensitivity". Octopus also declined to comment.
Climate-change protestors at Aberdeen Harbour
Dozens of climate-change protestors from the Aberdeen Climate Camp and MSP Maggie Chapman entered a restricted area at Aberdeen Harbour on Sunday.
They ignored warning signs and entered the fenced-off area of the harbour on the south side of the River Dee shortly before 4pm, and remained there until about 6pm.
The demonstration came just hours after more than 150 people associated with the climate camp attended an earlier protest in Aberdeen city centre.
The activists told the Press and Journal that both protests were a stand against the fossil-fuel industry and plans to develop an Energy Transition Zone in a Torry park.
Easing of mortgage-borrowing rules
Mortgage borrowing rules have been eased after the Bank of England scrapped an affordability test.
The "stress test" forced lenders to calculate whether potential borrowers would be able to cope if interest rates climbed by up to 3%.
The BBC says removing the test may help some potential borrowers get loans, such as the self-employed or freelance workers.
The withdrawal of the affordability test was announced in June, but came into effect today.
Plans for Hurricane Energy
Hurricane Energy is weighing up an M&A deal or a potential £205million boost to its existing Lancaster asset in the West of Shetland.
Energy Voice says the firm is debt-free after repaying more than £64million to bondholders, leaving the revitalised operator with options.
With a strong balance sheet, the challenge is to "identify how best to optimise capital allocation", the board told investors at its AGM.
A potential new Lancaster producer - the P8 well - would add incremental reserves of 3million-5million barrels, with capital expenditure of £65million to £74million subject to the rig market.
The alternative to another well at Lancaster is an M&A deal, with Hurricane being "attractive to outside investment and well positioned to look for new growth opportunities".
Doing so would diversify its portfolio from its single asset of Lancaster.
Hurricane told investors it is considering gas and oil opportunities, mainly in the UK, and is "currently engaged with multiple potential targets".