Does your hubby know anything about what's taxable and whats not?
If not then is he prepared and confident to learn something?
The HMRC website contains all the information he needs, if he's prepared/interested to research. If not, then an accountant will be invaluable for him.
By the way, are you here on legacy (old rules) or new?
The reason I ask is because if you're under new rules you'll need to submit another 30 month FLR(M) then you'll need to show taxable income at or above income threshold, means increased taxable income.
If under old legacy rules then your hubby should be sure to avail of minimum taxable income. (ie optimised tax breaks)
Hope that makes sense