John, who was to perform in Hyde Park on July 12 as part of the Barclaycard British Summer Time Festival, recently sought the care of doctors after falling ill during the tour. John (Aida, The Lion King, Billy Elliot) was diagnosed with an appendix abscess surrounding retrocaecal appendicitis.
He will undergo surgery in the coming weeks and is expected to resume his tour once he is fully recovered.
"Elton is incredibly disappointed to postpone these tour dates. To know that he made such super-human efforts and continued to perform to thousands through his illness only confirms his dedication to his European fans. He is eager to be back on top form and return to play the remaining shows starting in early September 2013," a spokesperson for John said in a statement.