What British TV show do I remember?

Back in the 1970s (or perhaps it was the early 1980s) I recall occasionally seeing a show on TV, but the name of it escapes me. I think it was British in origin, and it starred a bunch of children. I do recall the name of the show had a number in it… like “7 1/2” or something like that.

The Kids From 47a. About a family of brothers and sisters who had lost both their parents and were pretending everything was okay.

Famous Five?

Seven Up, or Seven Plus Seven?

Hmm, am thinking this was it. Were these shown on U.S. TV in the mid to late 1970s?