CONSERVATIVE PARTY

Won 331 seats (36.9%) in the 2015 election and currently holds 331 in the House of Commons

The Conservatives say only they can provide the "strong and stable" leadership needed to guide Britain through the Brexit process.

BREXIT

The Conservatives have promised to curb immigration, end the days of vast annual payments to the EU, leave the bloc's single market and secure a comprehensive free trade deal with the EU. They have ruled out giving people a vote on the final deal but have said parliament will get to scrutinise it. They have said they are willing to walk away from negotiations as "no deal is better than a bad deal".

ECONOMY

The Conservatives have said they will balance the budget deficit by the middle of the next decade and reduce taxes on business and working families. They also plan to give the state more of an influence over corporate Britain, including clamping down on executive pay and making it harder for foreign firms to take over British ones.

IMMIGRATION

The party has pledged to cut annual net migration below 100,000 but has not given a target date. It has said it will have a new immigration policy that will see the number of people coming to the UK from the EU reduced and controlled while still attracting the workers the economy needs. It has also promised to toughen visa requirements for students and increase the charge levied on companies employing migrant workers.

DEFENCE

The Conservatives have promised to retain Britain's Trident nuclear weapons and said they will continue to meet NATO's target of spending at least 2 percent of GDP on defence. They have also promised to increase the defence budget by at least 0.5 percent above inflation in every year of the new parliament.

LABOUR PARTY

Won 232 seats (30.4%) in the 2015 election and currently holds 229 in the House of Commons

Labour say the Conservatives are governing in the interests of the "privileged few" and have said they will build a fairer society.

BREXIT

Labour have said the Brexit vote must be respected. They have promised to immediately guarantee the rights of EU nationals in Britain and have said they would seek to maximise access to the EU's single market and safeguard workers' rights in Brexit negotiations.

ECONOMY

Labour has promised to increase income tax for the highest 5 percent of earners, renationalise rail companies and energy supply networks and invest 250 billion pounds in infrastructure over the next 10 years. It has also pledged a raft of measures to boost workers' rights, including raising the minimum wage and banning zero hours contracts.

IMMIGRATION

Labour has promised to end EU freedom of movement but has said it will prioritise jobs and prosperity over immigration targets. It wants to develop a new immigration system based on economic need and has also pledged to crack down on unscrupulous employers and overseas-only recruitment practices.

DEFENCE

Labour has said it will support the renewal of Britain's nuclear deterrent while working with international partners to seek to create a nuclear-free world. It has said it will pledge to meet NATO's target of spending at least 2 percent of GDP on defence and will put conflict resolution and human rights at the heart of its foreign policy.

LIBERAL DEMOCRAT

Won 8 seats (7.9%) in the 2015 election and currently holds 9 in the House of Commons

The Liberal Democrats says the government is leading Britain towards a "hard Brexit" and they want to fight to keep Britain in the EU's single market.

BREXIT

The Liberal Democrats say Britain should remain within the EU's single market and protect the rights of people to work, travel and study across the EU. They believe Britain is better off in the EU and have promised to hold a second referendum on the final deal, with the option of remaining in the EU on the ballot paper.

ECONOMY

The Liberal Democrats have promised to boost the economy with a major programme of capital investment. They have also pledged to eliminate the deficit on day-to-day spending by 2020 and increase income tax by 1p to invest in public services.

IMMIGRATION

The Liberal Democrats have promised to make the positive case for immigration and have said they will continue to allow high-skilled immigration to support key sectors of the economy. It will also create a fund to help local communities with the pressures migration puts on public services.

DEFENCE

The Liberal Democrats favour ending continuous at-sea nuclear deterrent, saying Britain should move to three rather than four submarines.

UK INDEPENDENCE PARTY

Won 1 seat (12.6%) in the 2015 election and currently holds none in the House of Commons

UKIP warn that giving the Conservatives a bigger majority would allow them to backslide on Brexit and they want to hold the prime minister's feet to the fire to ensure she follows through on her promises.

BREXIT

UKIP has said its Brexit deal objectives include full control of immigration, no divorce payment to the EU, full maritime sovereignty, supremacy of the British parliament in making laws and freedom to do trade deals with any country.

ECONOMY

UKIP has not set out its economic policy for the election yet but among things previously outlined it has said it would reduce foreign aid and spend the money on UK taxpayers instead.

IMMIGRATION

UKIP has promised to cut net migration to Britain to zero by introducing a points-based system like that used in Australia.

DEFENCE

UKIP supports renewing Britain's nuclear deterrent and has called for greater investment in Britain's armed forces.

SCOTTISH NATIONAL PARTY

Won 56 seats (4.7%) in the 2015 election and currently holds 54 in the House of Commons

The SNP say Scotland is being taken out of the EU against its will, they vow to fight against a "hard Brexit" and want to hold a second referendum on Scottish independence before Britain leaves the EU.

BREXIT

The SNP do not want Scotland taken out of the EU and are seeking a second independence referendum, after which they hope an independent Scotland can remain in the bloc.

ECONOMY

The SNP has said it wants a fairer, more sustainable economy in Scotland, and has previously pushed for devolution of powers on job creation, taxation, welfare and wages to the Scottish parliament.

IMMIGRATION

The SNP believe immigration is essential for the economy and wants a system that meets Scotland's social and economic needs

DEFENCE

The SNP opposes the renewal of Britain's nuclear weapons, which are based in Scotland.