Hi all - just a quick update to a topic that raised in the wanted section for LH side panels. I have just sourced a pair from Vale Onslow on Ebay link here https://www.ebay.co.uk/itm/Bsa-B25-C25-Side-Panel-cover-83-1454-Genuine-Nos/183832479348 for the oil tank cover and https://www.ebay.co.uk/itm/Bsa-B25-C25-Side-Panel-cover-83-1452-Genuine-Nos/183886353884?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2648 for the lh side.
Hope that this is of help.