This is WAY higher voltage rating than you need but will work perfectly:
Jaycar
https://www.jaycar.com.au/10nf-3kvdc-ceramic-capacitor/p/RC5380
This one would also work perfectly but may not fit physically (still a higher voltage rating but OK for your purpose):
https://www.jaycar.com.au/10nf-630vdc-polyester-capacitor/p/RG5201
FYI - 0.01uf = 10nf = 103
These are all identical just different ways to mark parts.
For other posters, Runcorn is a suburb of Brisbane Queensland Australia.