Probably the same unmentionable scum that nicked mine last November, you’re only down the road from me.
Mine’s never turned up, I hope yours does though. I’ve put email alerts on Gumtree and eBay for things like ‘Kona’, ‘Bike’, ‘Fox’, ‘Hope’ and so on, you never know your luck.
For what it’s worth, there’s a secondhand bike shop in Pompey (Southsea) that could be worth checking out. I wouldn’t do what I did and ring them though, I’ve since heard from several different people that they are known to be a trifle ‘dodgy’. If they had taken my bike in off the lowlife that nicked it, my ringing probably just alerted them to get rid elsewhere. You’re far better off popping in for a ‘browse’.