Sussex wrote:
It's worth reminding folks that up and till the end of January this year most of the cars picking up from these terminals were un-licensed.

Can you post a reference for that, please?
The Southampton Hackney trade is predominently, as far as I observe, independents and one company: Radio Taxis (Southampton). There is chaos at the docks when a cruise ship 'disgorges' it's passengers, mainly because of the sheer numbers involved, but HC do appear to service the area reasonably well.
The roads are within the docks area, inside security gates, but each berth has a rank. What are the legal implications of allowing a PH company to appoint marshals to control the business? Must a PH be booked on board the ship, for example?
How about....(here's an idea!)....conducting an unsatisfied demand survey ?
As long as I can collect my pre-booked fares, from when they embarked, I won't be to worried but, I do feel for the local lads somewhat.