UB is now called JB (Jobseeker's Benefit). Hubby can claim JB once he continues to fulfil the conditions of being available and genuinely seeking work, which he is doing while trying to set up his business. Obviously, when he starts trading, he will not be entitled to claim JB as he will cease to fulfil the conditions. I would be upfront with SW and tell them his plans. A chat with the Employment Services person (Job Facilitator) would be useful. You never know, he might be entitled to some sort of grant aid or even Back to Work Scheme!