Oxidatively generated radical precursors like carboxylic acids and potassium alkyl trifluoroborate salts were amongst the first substrates to be used in metallaphotoredox reactions. These bench-stable and readily synthetically accessible or commercially available substrates can be oxidised by a photocatalyst (Eox(Boc-proline carboxylate) = 0.95 V vs SCE in MeCN, Eox(potassium benzyltrifluoroborate) = 1.05 V vs SCE in MeCN), leaving the photocatalyst free to reduce the nickel catalyst to turn over both cycles.