What's the success rate?

VOA stats: ~27% of all challenges succeed; informal Band Reviews are 41%, formal Proposals 19%.

Per the VOA's published 2023–24 Challenges and Changes data, around 27% of all band challenges in England and Wales result in a band change. Splitting that further: informal Band Reviews succeed roughly 41% of the time; formal VO 7455 Proposals succeed about 19% of the time. The Band Review path is statistically more successful and is open to anyone who can present comparable evidence. Our pre-filter aims to push that success rate higher by only recommending challenges where the evidence is strong.

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