This is N. ‘Helen’, a cultivar bred by Borneo Exotics and introduced as a single-clone tissue cultured variety at the Chelsea Flower Show in 2011. It is a primary hybrid between N. spathulata and N. spectabilis. I acquired this as a very small plant in July of 2011 and it has made significant leaps in size this summer, with its new pitcher (shown here) almost 6″ tall. I look forward to its next one!
And here is the whole plant: