There is nice diagram on p.99 of the
Skyway Code of which the content, judging by some of the UKAB reports, may not be quite the common knowledge we think it is.
Also, I think on average we could do better with the radio. It’s another anti-collision device but one that many seem reticent to use when they are in doubt about a traffic pattern, runway(s) in use or where other aircraft are. It seems that some would rather get enough of a surprise that their exploits make it into print, rather than press the button and ask a question...
It’s quite OK to be unsure about something - that happens all the time, even in commercial aviation. What isn’t as good is carrying on with what you’re not happy with when there are many opportunities to obtain more information. An option that few seem to consider is that if it’s getting really messy, leave the circuit entirely and have another go from a better position.