Yes, but although they recognise the problem unlike most parties they aren't the most suited to fix it
suited or not, they are the only party that has any interest in fixing it. The others want things to carry on as they are so they can continue claiming their second, third and fourth homes, continue claiming their expenses and continue selling out all that is British for their own financial gain. And of course to further the creation of the EU superstate.
That's the point of the BNP, they're the British people's party. There's loads of fringe parties that don't stand a chance of getting anywhere (and they never will if they don't start actively campaigning). The BNP has the support to actually go places and get things fixed.