As of today, Apple now allows you to buy an iPhone 6s or an iPhone 6S Plus on a SIM-Free basis. What this basically means is that you will be able to buy the phone and it’s yours. Of course you will still need to buy a sim card to use the phone functionality.
The Apple website (for the UK) shows the iPhone 6S starting from £539 for the 16GB version.
Of course, if you want the iPhone 6S Plus then that will start from £619 for the 16GB version.
Buying a phone on a SIM-free basis also means that it’s unlocked. This also means that you will be able to use it on most mobile phone networks around the world.
Incidentally the iPhone 6S and the iPhone 6S Plus are also being launched today in 40 more countries including Andorra, Austria, Belgium, Bosnia, Bulgaria, Croatia, the Czech Republic, Denmark, Estonia, Finland, Greece, Greenland, Hungary, Iceland, Ireland, the Isle of Man, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, the Maldives, Mexico, Monaco, the Netherlands, Norway, Poland, Portugal, Romania, Russia, Slovakia, Slovenia, Spain, Sweden, Switzerland, and Taiwan.
On the 10th of October 2015 several Middle Eastern countries will be added, namely Bahrain, Jordan, Kuwait, Qatar, Saudi Arabia, and the United Arab Emirates. The 16th will see the phones ship to India, Malaysia, and Turkey.