The tidal Thames produces them to high thirties possibly bigger each year.I seem to recall a huge Trent ghostie popping up in years past can't recall the weight but again high thirty low forty possibly.Fight well don't they !
My Biggest Ghostie was 18lb out of a lake in Kent, this particular fish came in like a wet sack, although this is unusual as all other ghosties I've caught up to 15lb have fought like demons. Well done Phil, nice fish mate!
Pit down the road from me has commons to mid-30s, the ghosties seem to top out around 20lbs but I see pictures of them from time to time and they're a truly beautiful fish.
my lake has ghosty of around mid 20's. biggest i know of is......... http://www.carp-angling.com/simondring.htm impressive not sure if its still around though. hope thats of some help?