Tory MSP Adam Tomkins says there is a need for high level principles which will allow more politically contentious issues to be considered under the umbrella of these principles.

Michael Clancy from the Law Society of Scotland says governments and administrations should not be the sole authors of frameworks in order to guard against shifting priorities as governments change in the future.

He also calls for more transparency and accountability, a point which receives some support from others.

Green MSP Patrick Harvie wonders if a voluntary, non-binding arrangement could result in a stronger outcome, using the Committee on Climate Change - which covers both Scotland and the UK - as an example.

Image source, PA

Back in March, the UK government named 24 devolved areas where it wanted to temporarily retain power following Brexit.

Ministers in the Scottish and Welsh governments wanted subjects such as food labelling and animal welfare to come under their control.

However, UK ministers were bidding to oversee those areas, and others on the list, external, until a "new UK approach" could be established.

The Scottish government accused the UK government of a power grab.

Read more here.

Anthony Salamone from the Scottish Centre for European Relations suggests the uncertainty we face now may persist for some time, and as a result it's difficult to prepare.

Prof Paul Beaumont suggests the UK government should set up a secretariat to consider what is meant by the UK internal market as part of discussions of frameworks.

Prof Michael Keating says this would simplify matters as it would establish a set of standards to measure the policy impacts against.

Prof Michael Keating warns we are trying to address complex constitutional issues in too short a period of time.

"We could end up with a terrible muddle," he says.

Michael Clancy from the Law Society of Scotland agrees, adding that decisions made in a rush may not end up being the right decisions.

Lloyd Austin of RSPB Scotland explains environmental issues are inherently cross-border, which is why international measures are helpful.

The UK Cabinet paper did not recognise the need for cooperation in some areas, he says.

He calls for better inter-governmental mechanisms for this purpose.

Philip Sim
BBC Scotland political reporter

Image source, Getty Images

Ministers agreed that some powers currently exercised from Brussels should go into UK-wide frameworks - similar to how they were used previously but across the UK's "internal market" instead of the European one.

The row is about how these common frameworks are set up, and who has the final say over them where ministers fail to agree.

UK ministers say that some areas are so important that in the first few years after Brexit, they can't afford splits in that "internal market" over things like food standards.

Scottish ministers reckon this is a "power grab", leaving Westminster free to impose its will on Holyrood.

Read more from Philip Sim here.

The committee is taking evidence from a roundtable, comprising:

• Professor Michael Keating from the Centre on Constitutional Change, external
• Daphne Vlastari from Scottish Environment LINK, external
• Professor Colin Reid, a professor of environmental law
• Jonathan Hall of NFU Scotland, external
• Iain Wright from the Adam Smith Business School, external
• Professor Paul Beaumont from the Royal Society of Edinburgh, external
• Michael Clancy of the Law Society of Scotland, external
• Lloyd Austin of RSPB Scotland, external
• Anthony Salamone from the Scottish Centre for European Relations, external

Image source, Getty Images

The constitution committee will kick off shortly with a session on common UK frameworks.

A roundtable will be asked about the principles and policy areas of common frameworks, how they should be agreed and implemented, how they should be enforced and funding arrangements.

Read the committee papers here., external

And you can read more about the inquiry here., external

Image source, PA

Welcome to Holyrood Live on Wednesday 24 October 2018.

The constitution committee will take evidence on the all important common UK frameworks from a raft of witnesses from 9.30am.

Over lunchtime, committee conveners have a chance to quiz the first minister on her programme for government.

Image source, Getty Images

Portfolio questions this week focuses on health and sport.

Scottish Labour have the floor after that and will be focusing on the Monklands hospital site and then inequality.

SNP MSP Angela Constance will then lead a member’s debate on support for families of loved ones killed abroad.