“The issue raised by paragraphs 25 to 32 of the Re-Amended Particulars of Claim (namely whether the Second Defendant is required under an oral “Collateral Contract” as there alleged to meet any liability incurred under [the Agreement])”
“questions of case management, questions of cost, delay and the use of the parties’ and the court’s resources must come first and foremost in the consideration whether any particular issue should be dealt with as a preliminary issue.”