The knowledgeable Bounty Hunter is correct Eddie. Felmersham has no history of carp. My fishing of the venue has been mainly in matches but does stretch back to 1977-8 when Hitchin had the fishing rites.
In general the Great Ouse from Sharnbrook through to Bedford does not hold carp. In the early '80s roach, some big bream & dace were our principle quarry while by the '90s saw chub were to dominate along with a perch and a few tench - chopped worm fishing has highlighted the latter. More recently barbel have started to take over although, to be fair, they (barbel) are not usually targeted on our reach.
As with most fisheries the unproved tales of monsters have had their moments - catfish or carp? - but in 30 years I have never had reason to add to the myths. Its my opinion that just about the only untapped specimens in the river below the bridge are pike - fighting fit river pike of I guess over 15lbs are there for the taking.