NIB rate rise

Hi

I have an application in with NIB at the moment, however it is approved pending sale of my house, the house is sale agreed but still waiting on the buyer to sign will I still be guananteed the original rate, which was given when i applied. Thanks
 
From the link above...

NIB said it would honour applications at the current lower rates until August 1, giving homeowners two weeks to move. It also said it would honour offers made in the next fortnight at the lower rate for up to three months.