If you look at the bigger picture of what is happening in Britain for those of us here that is, this government is really cracking down on what it considers the !poor!.
They are introducing all sorts of welfare reforms which target disabled people, job seekers and basically any one on any sort of benefits. Housing benefit is also being targeted.
I guess this immigration policy is just an extension of that, and if you think of it from there point of view, any British people that they can get to go abroad to join there foreign spouse, is a bonus and will increase there chances of getting net migration down, ie no foreign spouse and dependants, and a British person (who might be entitled to shock horror some benefits for being British) going as well which will offset the numbers of people who come in.
Hope this makes sense love pads x