Redwing or Fieldfare?

In this very cold, snowy weather, the berries on the pyracanthus bushes have become attractive food for many birds.

Small flocks of Redwing (as above) and/or Fieldfare perhaps both) together with other thrushes and blackbirds are waiting patiently high in the trees before swooping down when the coast is clear to get their fill.

This bush was covered with beautiful red berries before the snow.  I think that this is a Fieldfare enjoying these.

But I think that this is a Redwing!

There are rich pickings for the blackbirds on the snow too.

Any advice as to identification welcome - but lovely to see these winter visitors.