Hi Luke. I'm quite certain that the bailiffs at Center Parcs will be able to offer plenty of sound advice when you get there. I've never been there but as you can see from the aerial view, there are some really big lakes there.
<a href='http://maps.live.com/default.aspx?v=2&cp=52.390399~0.655446&style=h&lvl=14&tilt=-90&dir=0&alt=-1000&sp=Point.rycskr4tp560_Redmond%2C%20Washington%2C%20United%20States___~Point.snqj8jgxyyzn_Mursley%2C%20Buckinghamshire%2C%20England%2C%20United%20Kingdom___~Point.snrzksgxys5q_MK17%200SA%20(postcode)%2C%20United%20Kingdom___~Point.sqf4mpgyh4cj_Rushden%2C%20England%2C%20United%20Kingdom___~Point.ssnzyfh357mn_Parish%20Rd%2C%20Stratton%20Strawless%2C%20Norwich%20NR10%205%2C%20United%20Kingdom___~Point.sqkk5hgzt237_Low%20Rd%2C%20St%20Ives%20PE27%205%2C%20United%20Kingdom___~Point.sr763bh1jszv_IP27%200YZ%20(postcode)%2C%20United%20Kingdom___~Point.sqy34jh1psnk_Elveden%2C%20Suffolk%2C%20England%2C%20United%20Kingdom___&encType=1
' target='_blank'> LINK</a>
It's been stocked, according to Center Parcs, with some carp, so you should get a few fish. Talk the staff =- don't be afraid to ask - and if they know nothing, get on yer bike (GOT to have a bike at Center Parcs) and find a fellow angler.
If the soft old sods on this site are a guide, they are bound to help out if you're polite.