Neither ir excusable, but tax dodging costs the country massively more so than does benefits fraud.
I guess what bugs me is that our highly-paid celebrities love nothing better than parading themselves and their social consciences at Comic Relief etc. and yet if they were to do the right thing by the taxman, the country would be considerably better off. Millions of pounds tucked away in Luxembourg and Jersey etc. means less to be spent on our hospitals and schools. Call me naive but what is morally right matters!