There is a post here on LED bulbs that was 100% correct and useful. Thank you (MaeJoMTB)MaeJoMTB 
https://forum.thaivisa.com/topic/1025621-honda-click-are-headlights-upgrade-able-to-led-andor-brighter/

I replaced the rear light, brake lights and reg plate light using the bulbs from the link from the post.

They didn't appear to function at first but once they were seated in the housing properly they worked really well.
They seem to be brighter. I'm guessing they will be more reliable and cooler.

And so my question is - What LED's do I buy to replace the two bulbs in the headlights and the yellow indicator bulbs front a rear?

Thanks!

 

For headlight replacements I found out that two H6 LED bulbs are the correct type. Can be bought on Lazada etc.
An alternative may be 12V Halogen 35w bulbs which will be very bright.

You can use any LED indicators.

Many of them will flash too fast.

If you add additional a resistor about 33Ohm, for each bulb which you replace they will flash in the normal speed.

With different resistors the speed with change.

Make sure you use resistors with absolutely minimum 2W, otherwise they will overheat.

https://www.es.co.th/detail.asp?Prod=015037755