Have they been named or banned yet ? Everything seemed to go quiet at the end of the season.

The club are working with Halton Council to issue the bans, should have something soon.

Widnes have two options. Ban the individuals themselves or lets Cheshire police take action (if applicable) and let the courts ban them. The difference (in basic terms), club ban means police can remove from ground.....court ban means police must arrest.

Widnes should be allowed to go after these 'fans' to recover costs.

What can I claim for?

You can receive compensation for a number of things, including
medical expenses;
travelling expenses

I should think they can sue for loss of earnings.