During the scene where Ryan is examining Thorne's laptop a mobile phone bill appears on screen. The London "Destinations" shown of 081 & 071 have not been used in London since 1995. Numbers are now written either 020 8, 020 7 or 020 3.
When Max is meeting with his daughter at university, she mentions midterms. This is actually part of the American college system and midterms don't exist in UK universities.
When one of the characters is climbing through the woods in the beginning, the hand of a crew member can be seen sticking briefly out from a rock cropping moving branches out of the way for him.
Marcus is stranded alone in the jungle and climbing a cliff - a couple of human hands (of crew) appear behind him as he walks up.