Can you tell me which download bulbs to but from my picture?
Hello @djhamb
Welcome to the Bunnings Workshop community. It's sensational to have you join us, and thanks for sharing your question about your downlight.
The name, model and identification of your downlight is sometimes printed at the side of the bulb itself. I suggest removing your bulb in order to see what model it is. Your bulb appears to be of modern design and could possibly be a twist-to-remove type. Older models have solid steel pins which need to be pulled out. Please look carefully before removing your bulb.
Please remember to take all necessary safety precautions when working at height or on a ladder. I suggest having a quick at this guide - How to use ladders safely by @Adam_W.
If you need further assistance, please let us know.
Eric