The SNP has warned the Government against trying to bring through changes to Scottish devolution in the "unelected, bloated, ermine-coated" House of Lords.

The party's Commons business spokesman Pete Wishart warned ministers against attempting to amend the Scotland Bill in the Lords, saying the Scottish people see it as "nothing other than the repository for the donors and cronies of the UK parties".

He spoke after Commons Leader Chris Grayling announced that the Bill, which will implement devolution for Scotland promised by the main party leaders during last year's independence referendum, and developed by the Smith commission, will return to Parliament next week.

The SNP will be seeking to amend it during committee stage on Monday and Tuesday in the Commons, arguing that in its current form it does not meet the proposals drawn up by Smith.

During the business question, Mr Wishart warned the Government against trying to change it further when it reaches the Lords, away from the scrutiny of SNP MPs.

He said: "We return to the Scotland Bill next week and we have two days of further amendments to try and improve this Bill and return it to the principles of the Smith commission which the devolution committee in the Scottish Parliament hasn't been met and neither now does the House of Commons library.

"So can we have the Secretary of State for Scotland and his team coming to this House on Monday and Tuesday in a much more accommodating mood to ensure that the principles of Smith are met.

"You better not even be thinking about amending the Scotland Bill in the House of Lords, the unelected House of Lords.

"Because the House of Lords has never been held in such contempt by the Scottish people who see it as nothing other than the repository for the donors and cronies of the UK parties.

"So it must be amended here, can I have your assurance that any important amendments to the Scotland Bill will be made in the elected chamber of the House of Commons, not in that bloated ermine-coated absurd legislature down the corridor there?"

Mr Grayling replied: "It is this Government's position that we are fulfilling our obligation and implementing the Smith commission's report in the Scotland Bill.

"You will have plenty of opportunities to bring forward your own amendments if you choose to do so, to question Scotland Office ministers about the content of that Bill."