Bailiffs and debt collectors : Directgov - Money, tax and benefits
Gives government information on what bailiffs can & cannot do.
I'll say again - what new powers?
I cannot find anything online.
Read
this.
and
this where it mentions the powers.
The ONLY bailiffs that can break your door down are those that are acting on behalf of the local magistrates courts after a CCJ has been issued.
Hence what happened was "illegal" and you have a right to complain about this guy. I would.