it looks to me, like you cannot switch to a spouse visa inside the uk becuase, as long ago as 01.04.03 the UK introduced a "no switching" rule, stopping a visitor's visas being switched to a spouse visa in the UK .... except in truly exceptional circumstances. The Government did this because so many visitors were using this ploy that it simply got fed up and added the no switching rule.
and there is little else you can do to extend a visitor visa.
you was in oslo working ? for how long, and what visa did you have ?
like ladyj said, go and see CAb, but looks to me like you've got to go back to the phils..
