I seem to remember there being more 20th century a...

I seem to remember there being more 20th century art last time I visited (several years ago), it seems a shame to have so much Tudor and Victorian art but so little from later on. Granted, we didn't pay to go into the separate exhibition areas, but then we didn't last time either. That said, it always interesting to compare how portrait painting has changed over the years. Did the Tudors really all look the same as each other?