It must have been an awesome site!, your very lucky, I've only ever see two on different occasions.
They remind me very much of the Red cardinals that I've seen in N America
I was stood outside on the drive & there were about 20 feeding on berries in a cotoneaster shrub in my front garden not 6' away. They're creatures of habit, so I'll be on the lookout in the morning.....I'll keep you posted gness:-)