A group of hardy campers slept outside on Saturday night to raise awareness about the plight of vulnerable people in the former Soviet Union.
Eight members of Northwood and Pinner Liberal Synagogue, in Green Lane, slept in tents.
They were also joined around the campfire by many other people on Saturday evening.
Rabbi Aaron Goldstein said: “It was absolutely superb. It was very cold and wet but we had a lovely campfire and a sing song.
“The atmosphere was fantastic and the important thing is that we helped to raise awareness.”