Sorry folks neither ever became a nightclub. Southsea was laid up for a period at Newhaven. There was a proposal to convert Brading into a Nightclub at Southampton with an additional deck house built on the Spar deck but nothing came of it. Neither ship ever had an operational/static career after retirement from Sealink British Ferries.
Must have been Southsea that I used to see alot of when in Newhaven then. She looked a right state unfortunately, I seem to remember that the locals wanted her removed for years...I assume that was done but I've not been back since around 2002 ish.
Thanks for clarifying Steve.