Virgin Atlantic has some of the best business class cabins and is one of the best ways to travel to London from the US. High fuel surcharges were the only thing preventing us from grabbing business class seats, but they have been surprisingly lowered (on saver awards) since Virgin Atlantic switched to dynamic awards. It is important to note that taxes are still very high on non-saver last minute awards (review).
Seats.aero search for Virgin Atlantic award space from the US to London
Virgin Atlantic webpage awards
Use Virgin’s smartphone app if you encounter webpage booking errors
I recommend using the Virgin Atlantic smartphone app (review) in case you encounter booking errors after entering the credit card information.
Conclusion
This business class award is officially the lowest I have ever encountered on the JFK-LHR route. Only time will tell if Virgin Atlantic keeps releasing saver awards for such insanely low points and taxes, but I am planning to transfer some Chase points before the end of November to take advantage of the 40% transfer bonus.