The Circle international versions are all filmed in Salford
 

https://www.digitalspy.com/tv/realit...ming-location/

Mess at them all coming to the UK to film, the American one has already been filmed, The Brazillian one is due to start in the coming weeks then the French one after that

They filmed the USA pilot for the Question Jury in the UK, they casted American (accented) people to be filmed on the set here, and it would be broadcast over there.

Netflix doing this a lot lately. All regional episodes of their ‘criminal’ were filmed on the same location as well.

Lewis Thorp to appear on the Brazilian one?

The £ really is that cheap haha.

I’d guess they’re being filmed here just to make sure the format is popular enough internationally to warrant building local sets

They had a fully-equipped studio and apartments here so financially it makes sense in the event the show isn't renewed. Why would Netflix pay for three studio spaces when they can use one?

The Wall on BBC One was filmed in Poland. Series one of Love Island Australia used the UK villa in Majorca.

It happens a lot.

Hope it is done like Drag Race UK on iPlayer - released one by one

Was the American one filmed there too? I wondered why the light up circle was put up way before the UK one started.

It clearly states it was