hi there mate, ive recently moved into the portsmouth area myself , theres a couple of meets every month down southsea near the sea front with a group called pompey old skool.
They tend to meet up on this hill called portsdown hill, many car meets start there and end up somewhere round the area, more then likely southsea.
If youve got facebook they got a page on there and they normally always post any meets going on.

Ive also heard there are meets up hayling billy, ive not been myself yet, but ive been thinking whether to go.

Hope ive been of some help.

Ian