On October 28, 1971 the UK launched Prospero via a Black Arrow rocket from Woomera, in South Australia.
When the Prospero spacecraft was launched atop a Black Arrow rocket on 28 October 1971, it marked the end of an era. A very short era.
Prospero was the first UK satellite to be launched on a UK launch vehicle; it would also be the last.
Ministers had ...
A resource that's regularly updated is the Wikipedia List of active Solar System probes
This also includes probes not intended to land, and probes that have already landed, but since the list only has 25 entries a time of writing, filtering is not a huge job (relevant keywords being "arrival" and "lander").
As of November 2020, the only ...