As far as I know Ben all these venues hold carp:
Westwood reservoir, High Green, Sheffield
Tinmill Dam, Deepcar, Sheffield
Pebley Reservoir,Harthill, Sheffield
Kiveton Hall Farm, Sheffield
There are probably many more, try this website or type 'carp fishing south yorkshire into a search engine.
http://www.yorkshirefishing.ndo.co.uk/southyorkvenues.htm
A bit further afield theres Elm Tree Farm, Hooton Roberts, Rotherham.
On the site above it states the horseshoe pond holds many around 2lb, but i've had 7 & 8 pounders on catmeat in the margins so don't believe everything you read, better to speak to people who actually fish these places.
Any other takers on this thread?
e