article_snippet: Signs have gone up in every Royal park across the capital warning:
article_snippet: But a Royal Parks spokesman insisted Signs could also be found far away from palaces, including Richmond Park and Greenwich Park.
article_snippet: a Royal Parks spokesman said: ‘They can have a very negative impact on the wildlife in Royal Parks and interfere with the safety and comfort of park visitors.
highlights_snippet: Signs have gone up in every Royal park warning the aircraft 'is prohibited'
  
highlights_snippet: It has prompted speculation gadgets pose risk to Royal Parks .
  
highlights_snippet: Royal Parks spokesman insisted signs were also placed away from palaces .
  