News·Updated on 23 Apr 2016In Pictures: Obama Visits The Globe Theatre As UK Trip ContinuesA four-day visit to the UK has included lunch with the Queen, a day after her 90th birthday.by Laura Gallant, Matthew Champion, Laura SilverFacebookPinterestTwitterMailLink US president Barack Obama presented a Q&A session at the Royal Horticultural Halls in London on Saturday, where he continued to discuss his support of Britain staying in the European Union. Christopher Furlong / Getty Images He urged young people to "reject pessimism and cynicism" and answered questions on the EU's involvement with the controversial Transatlantic Trade and Investment Partnership. Justin Tallis / AFP/Getty Images JOHN MACDOUGALL / Staff A protest banner in Germany, where Obama visits after his UK trip As part of events commemorating 400 years since the death of William Shakespeare, on Saturday morning Obama visited the Globe theatre, a replica of where many of his plays were originally performed. Wpa Pool / Getty Images Wpa Pool / Getty Images There was a very strong police presence ahead of the president's visit to the historic theatre. Wpa Pool / Getty Images Wpa Pool / Getty Images Ahead of dinner at with the Duke and Duchess of Cambridge and Prince Harry at Kensington Palace on Friday, the Obamas were introduced to Prince George. The White House / Getty Images Prince George was wearing pyjamas. The White House / Getty Images President Obama held a joint press conference with prime minister David Cameron at Downing Street on Friday afternoon, where he expanded on his support for Britain remaining in the EU. Matt Crossick / Empics Entertainment Lauren Hurley / PA WIRE Matt Crossick / PA Frank Augstein / AP Peter Nicholls / PA WIRE Peter Nicholls / PA WIRE Earlier on Friday the Obamas met the Queen, a day after she celebrated her 90th birthday. Wpa Pool / Getty Images They were greeted at Windsor Castle by the Queen and Prince Philip ahead of a private lunch on Friday afternoon. Alastair Grant / AP Alastair Grant / AP Alastair Grant / PA WIRE Prince Philip drove the Obamas and the Queen into Windsor Castle shortly after they arrived. Geoff Pugh / PA WIRE Geoff Pugh / PA WIRE John Stillwell / PA WIRE John Stillwell / PA WIRE President Obama and first lady Michelle Obama had arrived in Britain on Thursday. Dan Kitwood / Getty Images Obama Warns Of Consequences If Britain Votes To Leave The EU buzzfeed.com The Mayor Of London Has Just Called Barack Obama A “Part-Kenyan President” buzzfeed.com Laura GallantPicture Assistant, BuzzFeed UKLaura Gallant is a photo editor for BuzzFeed UK and is based in London.Contact Laura Gallant at Laura.Gallant@BuzzFeed.com.Got a confidential tip? 👉 Submit it hereMatthew ChampionBuzzFeed News ReporterMatthew Champion is a deputy world news editor for BuzzFeed News and is based in London. Contact Matthew Champion at firstname.lastname@example.org.Laura SilverBuzzFeed News ReporterLaura Silver is a reporter for BuzzFeed News and is based in London. Contact Laura Silver at email@example.com.