In a brief statement it said it was "disappointed by the decision of the English High Court, which it considers incorrectly applies the doctrine of state immunity".

Source: https://www.forbes.com/sites/dominicdudley/2023/02/08/bahrain-fails-in-bid-to-claim-state-immunity-over-alleged-hacking-of-dissidents/

The last time a senior royal took to the witness stand in an English High Court trial was in 1891 when the then Prince of Wales was called to give evidence in a gambling case dubbed the Royal Baccarat Scandal.

Source: https://indianexpress.com/article/world/prince-harry-makes-landmark-court-appearance-phone-hacking-case-8648547/