Flying Time at Shoreham have a fleet of DA40's. There are/were glass C172's at Goodwood advertised a while back. There are probably other places but you may have to travel if it's that important to you to fly something new and shiny.
My advice is find an instructor that's been flying since the dawn of time and fly in whatever heap he/she directs you to.
I agree with Mary. Expensive new aircraft often seem to come with unexpected features; like exploding batteries!