I Doubt He’ll “Be round” for his £30 probably trying to give you a minor scare I guess, if He was really going to follow through I’d imagine He’d have done it then and there – Marched you off to a cash point, did he bother to give you any paper work with your bollocking?
And yep you were a country mile from being road legal on a bike at night. Forgetting to turn your rear light on and not being arsed to own a front light is probably about the weakest defense ever…
I very much doubt most Rozzers actually know (or really care) what you should have fitted to be totally compliant (Pedal reflectors, front and rear reflectors and lights, etc) but a £5 set of cheapo LEDs from Tesco would probably have kept him off your case…