These recessed wipers are Australian, the UK style top rubber or chromed plinth won't fit properly due to length, diameter and angle differences.
The 8 sided nut and stainless washer can be had from Mini parts suppliers like Mini Kingdom Online.
The bottom angled piece (is it rubber or alloy?) I can't help with, but if you PM me, I can machine you a pair of top rubbers from black HDPE.
AFAIK, the Oz top rubbers are NLA new, unless someone has recently had some moulded.
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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
