Scottish Lib Dem conference: Leader Clegg says party 'making a difference' 15 March 2013 Last updated at 00:32 The Scottish Liberal Democrats are opening their party conference with a pledge to remain "resolute" in defence of voters' interests. UK leader Nick Clegg is expected to argue that his party is making a difference at Westminster and in Scotland, despite recent controversies. Delegates in Dundee will hear that the Lib Dems have delivered tax cuts and boosted pensions. Scottish leader Willie Rennie will address the conference on Saturday. Ahead of the two-day gathering, Mr Rennie said the party's five MSPs punched well above their weight. He added that as well as by-election success in Eastleigh, Hampshire, the Lib Dems had triumphed in Scottish council by-elections in Rutherglen and Kirkintilloch. However, the party has faced unease in the past few weeks. It has experienced tensions within the UK coalition and adverse publicity surrounding the jailing of former Lib Dem cabinet minister Chris Huhne. He received an eight-month sentence after admitting asking his then wife, Vicky Pryce, to take his speeding points to avoid losing his licence in 2003. Only the Liberal Democrats can deliver a stronger economy and a fairer society, enabling everyone to get on in life End Quote Nick Cegg Lib Dem leader The spotlight has also been put on the party after the emergence of accusations of inappropriate behaviour made against former Lib Dem chief executive Lord Rennard. He strenuously denies the claims. At the Scottish Lib Dem conference, Mr Clegg is expected to stress party achievements - such as taking low earners out of tax and developing the Green Investment Bank in Scotland. He will insist that the party's contribution to the UK coalition remained valid. Mr Clegg is expected to say: "Only the Liberal Democrats can deliver a stronger economy and a fairer society, enabling everyone to get on in life. That's why we believe Scotland and the United Kingdom are better together. Only a vibrant Scotland as part of a prosperous United Kingdom can bring the stronger economy Scotland needs. He believes the people of the UK have a "rich shared heritage" and "shared values and experience." Greater good Mr Rennie is also expected to stress the positive, saying that the Lib Dems' remain "resolute" in defence of the interests of hard-working families. He told BBC Scotland: "The party has endured difficult periods in the past. The party is solid and resolute because the values that we've got are so important - the values of the greater good. I'll be talking about building a stronger economy and a fairer society so that everyone can get a chance to get on.