"The overriding objective is that the court should deal with cases justly. That includes, so far as is practicable, ensuring that each case is dealt with not only expeditiously but also fairly. Amendments in general ought to be allowed so that the real dispute between the parties can be adjudicated upon, provided that any prejudice to the other party caused by the amendment can be compensated for in costs and the public interest in the administration of justice is not significantly harmed."
"(1) Oakwood personnel based in its office ... "(2) Oakwood personnel based at Hollandia's offices ... "(3) Oakwood personnel based on site."