Thank you for your prompt reply. I shall be grateful for some further clarifications
1) Thank you for confirming his student visa will deem to continue but the question is whether he is required to attend college during this period. As mentioned previously, there are no highly trusted sponsors offering full time intake until after Feb 2015.
If he is required to attend college than what are his options under the circumstances
2) I agree they can apply for same day service but we have got number of concerns with the way UKBA is perceived to be treating such applications.
His fiancée separated from her ex-husband in Sep 2013 and applied for divorce in Apr 2014 (after getting engaged to my brother). The divorce has only been granted last week whereas his visa is very close to curtailment date. I feel they will not look at the application favourably.
In your experience (and without holding you responsible for general advice) do you think this is likely to be a problem.