Making sense of a lighting circuit

[Jupiter01]

I have a one way light switch which operates 4 lights distributed across the room. This means that all 4 lights switch on/off based on the position of this switch.

There is one set of T&E in the switch. These are heading to a light fitting that also has the live feed and one further cable. I assumed that this "further cable is providing power to another of the 4 light fittings which is then daisy chained across to the others.

My quandary: the other 2 light fittings have a single cable and the final one has two cables. I am at a loss as to why there are two lights with a single cable. I was expecting only one of these 4 lights to have a single cable - indicating the end of the circuit.

I hope this explains my situation but please let me know if there are any questions.

 

[RF Lighting]

Probably there is a joint box shoved up into the ceiling void.

 

[Jupiter01]

That's the only conclusion I could draw. Bad practice?
Is there a test that can be performed to determine which end of the cable matches which in this situation?

I am aware of the Continuity function I can use to identify the Switch cable and obviously the live fed will be detected by the voltage detector.

 

[Harry Bloomfield]

That's the only conclusion I could draw. Bad practice?

As above - joint box, it depends when it was done, whether it was bad practice or normal.

 

[Jupiter01]

Thanks all. Are there any easy methods to know which end of the cable belongs to which across multiple holes in the ceilings? I can't pull as the cable is clipped under the ceiling.