“A party wishing to advance a positive case must set out that case; and reasons must be set out for any denial of an allegation”
“If a case of forgery is to be put then the challenge should be set out fairly and squarely on the pleadings (and appropriate directions can be given).”
“If a party challenging the authenticity of a document wishes to make a positive case as to how the document came to be created, including any allegation that it has been forged, then if it is not appropriate to plead out the allegation, it seems to me to be incumbent on that party to set out the allegation clearly in correspondence, either at the time of serving the notice to prove or at least in sufficiently good time to ensure that the challenged party has a fair opportunity to deal with it.”