In its Budget submission, the TUC says, according to Money Marketing::

non-domiciled business owners are exploiting the non-dom tax loophole to gain an unfair advantage over businesses owned by UK taxpayers. It says this rule is stifling genuine business competition.

TUC general secretary Brendan Barber is reported to say

If the UK is to survive in today's ultra-competitive global economy, it needs a tax system that rewards business innovation and productivity not the ability to exploit tax loopholes. The Chancellor should consider this when drawing up his Budget and must ignore the self-interested whining of a small City elite masquerading as the national interest.

I agree.