I am sponsoring my husband here in UK and he is now on spouse visa. I am a British Citizen by birth with a British Passport. I now need to go abroad for 2 weeks, would I be asked questions upon return to the UK as to why I travelled abroad alone? I will be travelling with relatives for religious purposes but they are not aware of me sponsoring my husband and I don't want to be asked questions in front of them by the UKBA. Will they know that I sponsor anyone just by looking at my passport or getting any details up?

My husband hasn't been able to get leave from his full time job therefore I could not travel with him, would there be a problem because of this when we apply for ILR?

This is not a problem, don't worry.