Scotland Office minister David Mundell says the Conservatives will "give no quarter" to the Lib Dems at the next general election.
Scottish Political Editor Peter MacMahon writes about the Conservatives' devolution journey north of the border.
The leader of the Scottish Conservatives has called on the national party to help fight for the union to remain intact.
Flowers have been left outside Margaret Thatcher's Belgravia home. The card reads:
"RIP Maggie Thatcher.
"The greatest British leader and a true lady.
"You make Britain what it is. Rest in peace."
So sad to hear of the death of Lady Thatcher. The greatest PM of all time who rescued this country and made Britain great again.
Very saddened to hear that our greatest peacetime Prime Minister, Baroness Thathcher, has passed away. She will always be my hero.
Our thoughts today will above all be with Margaret Thatcher's family on their loss. She was a politician of conviction who broke new ground.
terribly sad news that Lady T has passed away. she brought me into politics and remains an inspiration to this day.#fb
Britain was on its knees in the 1970s. Mrs Thatcher saved the country. She was incomparable.
All of us right or left, young or old, owe a huge debt of gratitude 2 Mrs T 4 an unrivalled lifetime of public service who put Britain first
Lady Thatcher's funeral will be ceremonial with full military honours, similar to the Queen Mother, but she will not lie in state, as was her wish.
Really sad to hear of Lady Thatcher's death. A fantastic PM and a true inspiration. My prayers and thoughts are with her loved ones
Deeply saddened at news Margaret Thatcher has passed away. One of Britain's greatest leaders. She transformed Britain & made us great again
I may not always have agreed with Lady Thatcher but she was a formidable political leader and our nation is the poorer for her passing.
The Prime Minister has called on his party to fight with 'everything we've got' to preserve the United Kingdom. David Cameron told delegates at the Conservative conference that nothing mattered more tothe Coalition than keeping Scotland in the union.
The Prime Minister says the entire UK would be worse off if Scotland was to break from the union.
David Cameron was speaking to ITV Border on the second day of the Conservative party conference in Birmingham.
Mr Cameron said he would put party political differences aside to campaign against Scottish independence.
Helen Ford began her interview on the subject of cuts, after the Chancellor announced his intention to save an extra £10 billion from the welfare bill.
She asked the PM if he could understand why some in the North East of England believe they are being unfairly penalised.
Watch Helen's full interview.