Venus

Tonight, as for the past few nights, there has been a planet, thought to be Venus, quite high in the western sky. More precisely, about 30° above the horizon at 2100, Epsom local time.

On one night, there was also a large red object not far away, possibly another planet, but nowhere near as bright as Venus, if that is what it was.

Reference 1 no doubt does the business, except that, sadly, I have no idea about declinations and right ascensions. Reference 2 is rather better, and appears to confirm the Venus theory. But no other planets in sight.

PS: later: hopefully, sometime soon, I will get around to studying the equatorial coordinate system at reference 3. So far, the story seems to be that declination is altitude relative to the celestial equator and right ascension is longitude relative to some (fairly) fixed point on that equator. We shall see.

Reference 1: https://theskylive.com/venus-tracker.

Reference 2: https://www.timeanddate.com/astronomy/night/uk/london.

Reference 3: https://en.wikipedia.org/wiki/Equatorial_coordinate_system.