- The Swiss move is one-sided, it's not yet implemented. There's a good chance their EU treaties get cancelled when they implement it.
- The border controls some countries implemented are a suspension of certain Schenfen rules. They do not affect the free movement of people within the EU. Also these Schengen rules have never applied to the UK.
They're related by fear. Fear of being swamped by immigrants. Fear of terrorists. Fear of losing their country's identity. The UK, like Switzerland, adopted freedom of movement provisions to access the common market despite the UK not being in Schengen. The Swiss suspended negotiations on their new controls specifically to see the outcome of the UK referendum.
- The Swiss move is one-sided, it's not yet implemented. There's a good chance their EU treaties get cancelled when they implement it. - The border controls some countries implemented are a suspension of certain Schenfen rules. They do not affect the free movement of people within the EU. Also these Schengen rules have never applied to the UK.