You need to decide whether you are 'trading' or not to determine the taxability for staking,
On some types of cryptoasset you can earn ‘staking’ rewards in that cryptoasset. This is a bit like earning interest on money in a bank account in that you are rewarded for locking away your cryptoassets for a certain period. However, the rewards may not be guaranteed or even defined.
Unlike interest, income from staking is not treated as savings income by HMRC. When you ‘stake’ your cryptoasset wealth, it is used to help make further transactions in that cryptocurrency in a similar way to mining.
Further guidance can be found at:
CRYPTO61110 - Decentralised Finance: Lending and staking: Introduction
CRYPTO21200 - Cryptoassets for individuals: Income Tax: staking