From last time, it took approx 2 weeks after docking to being ready for collection from the dealership.
I have a provisional collection date of the 3rd July this time, which sort of confirms that timescale
Despite being a regular thing a lot depends on your location wrt Bristol and car transporter schedules. I'm just an hour down the motorway, collecting from Lexus Swindon. I guess there will be a significant number of cars heading along the M4 to London..