I am a middle level executive working in banking and insurance for 10+ years. Hold insurance associateship of the CII (UK). Have applied to Gies and Imperial, which online MBA would be a better option? I am not considering an MBA from South Africa as my first degree is from here and therefore the networking would be limited.

Depends on your goals. I would pick UIUC but Imperial may have more active MBA alumni in your region. 

Thanks Duncan. Appre