That this House notes that 23 June 2026 marks 10 years since the UK voted to leave the European Union; recognises the significant economic, political and social changes that have taken place since the referendum; further notes analysis suggesting that Brexit is reducing UK economic output by approximately £90 billion per year and has cost the Welsh economy at least £4 billion; acknowledges concerns expressed by businesses, farmers, manufacturers and exporters in Wales regarding increased barriers to trade with the UK's largest export market; also notes that Wales was a major beneficiary of European Structural and Investment Funds prior to Brexit, receiving billions of pounds for economic development, infrastructure, skills, research and community regeneration projects; notes concerns that replacement funding arrangements have not matched the scale, long-term certainty or local flexibility of previous European funding programmes; further notes the loss of freedom of movement and the impact this has had on opportunities for young people to live, work and study across Europe; further recognises the contribution that European funding made to communities across Wales, particularly in former industrial, rural and economically disadvantaged areas; and calls on the Government to take immediate steps towards the UK rejoining the European Union Single Market and Customs Union in order to reduce barriers to trade, boost economic growth, strengthen cooperation with European partners and expand opportunities for people and businesses across Wales and the wider UK.