I recently landed a job in the UK about 5 months ago from a multinational company. They offered to sponsor my visa and arranged for the application process. However, in these months, I had some really unfortunate change of personal circumstances and relocating to UK and this particular job opportunity sounds very unpalatable to me at the moment.
I recently received the visa and its time to plan the travel. I understand it is unprofessional and highly inconvenient, but is it possible to refuse a job offer after they have sponsored a visa? What could be the possible fallout? Please help.