To rely on hearsay evidence, notice must be given to the other party (CPR 33.2) - if evidence is in a witness statement, giving oral evidence, no formal notice is required as notice of hearsay is deemed served when witness statements are served, - if hearsay evidence is a witness statement of someone not giving goral evidence then no formal notice is required but the other party must be informed the witness will not be giving evidence at trial, with reasons, - in all other cases, formal notice must be given to the other party, identifying the hearsay, stating they wish to rely on it and the reason why the witness will not be called