The Outside Organisation duo Chris Goodman and Alan Edwards were responsible for handing the media as Campbell gave evidence.
In an exclusive article for PRWeek, Goodman writes: 'Our approach, drawn up in consultation with Ms Campbell and her brilliant solicitor, was straightforward.
'We wanted the event to be low key, respectful and unfussy - which was the team logic behind seeking temporarily to ban photographers picturing and videoing her arrival at, presence in and departure from the court.'
Goodman and Edwards, the model's publicists since 2003, travelled to The Hague on 4 August, ahead of Campbell's appearance the following day.
Goodman writes: 'That night, we ensured that all major news organisations were advised that Alan and I were in The Hague. We also set up a press office back at our London HQ to field calls there.'
Following Campbell's testimony, the two PROs worked the media pack to canvass opinions and take questions.
'As Ms Campbell flew away with her boyfriend in his private jet and the legal team headed back to London, we worked long into the afternoon outside the court,' adds Goodman. 'The value of that hard work was reflected in the majority of the media coverage on Friday morning - it was dominated by broadly neutral court reporting, which to the PR is a positive.'
However, Campbell's reputation was hanging in the balance this week, after former agent Carol White gave evidence that contrasted with Campbell's own sworn version of events.
Edwards is CEO of The Outside Organisation while Goodman is a senior consultant at the agency.