social care, has the UK spending £3,121 per head. In 2017 the UK spent £2,989 per person on healthcare, around the median for members of the Organisation for Economic Co-operation and Development. Regulatory bodies are organised on a UK-wide basis such as the General Medical Council, the Nursing and Midwifery Council and non-governmental-based, such as the Royal Colleges. Political and operational responsibility for healthcare lies with four national executives; healthcare in England is the responsibility of the UK Government; healthcare in Northern Ireland is the responsibility of the Northern Ireland Executive; healthcare in Scotland is the responsibility of the Scottish Government; and healthcare in Wales is the responsibility of the Welsh Government. Each National Health Service has different policies and priorities, resulting in contrasts. Culture The culture of the United Kingdom has been influenced by many factors including: the nation's island status; its history as a western liberal democracy and a major power; as well as being a political union of four countries with each preserving elements of distinctive traditions, customs and symbolism. As a result of the British Empire, British influence can be observed in the language, culture and legal systems of many of its former colonies including Australia, Canada, India, Ireland, New Zealand, Pakistan, South Africa and the United States; a common culture coined today as the Anglosphere. The substantial cultural influence of the United Kingdom has led to it being described as a "cultural superpower". A global opinion poll for the BBC saw the United Kingdom ranked the third most positively viewed nation in the world (behind Germany and Canada) in 2013 and 2014. Literature "British literature" refers to literature associated with the United Kingdom, the Isle of Man and the Channel Islands. Most British literature is in the English language. In 2005, some 206,000 books were published in the United Kingdom and in 2006 it was the largest publisher of books in the world. The English playwright and poet William Shakespeare is widely regarded as the greatest dramatist of all time. The 20th-century English crime writer Agatha Christie is the best-selling novelist of all time. Twelve of the top 25 of 100 novels by British writers chosen by a BBC poll of global critics were written by women; these included works by George Eliot, Virginia Woolf, Charlotte and Emily Brontë, Mary Shelley, Jane Austen, Doris Lessing and Zadie Smith. Scotland's contributions include Arthur Conan Doyle (the