The dating group
It is said that this practice evolved from the difficulties of finding a partner due to the pervasive shyness that exists in Japanese society.
The same concept applies, just in a different area.
Just because you don't live in the UK doesn't mean you can't use this service.
Generally speaking, gōkon are not primarily intended to result in one-night stands (something more associated with nanpa), but rather for making friends and possibly forming long-term relationships.
Typically groups of men and women will sit opposite each other and converse with one another, while simultaneously whispering discussions with their same-sex peers about which potential partners they find attractive.
is a group blind date, typically used to form at least some friendships between two groups that are each of a single sex.