SIR, Over the past few weeks, the UK Government has been engaged in a public information campaign designed to explain to your readers how the devolution settlement is evolving. I wanted to expand on what we are doing – and why.

We – and the main Opposition parties - are committed to implementing the recommendations of the Smith Commission, which will make Holyrood one of the most powerful devolved Parliaments in the world.

The work of Lord Smith and his Commission is already being turned into the building blocks of legislation. Whoever forms the next UK Government will make these law at the earliest possible opportunity.

But Lord Smith was also very clear about giving people a better understanding of what powers are devolved to Scotland – those which are already here and the new ones on the way. These are major changes and it is important people understand what they will mean.

So that is why we have launched a campaign, 'Scotland’s Changing’. Every household in this country will receive a leaflet setting out the simple facts about what the UK Government is doing to further strengthen the powerful Scottish Parliament.

It has been backed by newspaper and radio adverts and there is also a tumblr site http://ourunitedfuture.tumblr.com/ where you can find out more and take part in a light-hearted quiz designed to test your knowledge of Scotland’s devolution settlement.

With two governments in Holyrood and Westminster working together, I believe Scotland has the best of both worlds. The Scottish Government can deliver solutions tailored to specific Scottish needs which is backed up by the safety, security and strength which comes from being part of the wider United Kingdom.

I am, etc.

Rt. Hon. Alistair Carmichael MP Secretary of State for Scotland