Hi reds123
You should have received a letter from DWP in February informing you of the benefit increase.
Usually when claimants receive both CB ESA and IR ESA the IR ESA will be the disability premiums such as SDP and EDP.
CB ESA is usually just made up of the basic £92.05 + Support component £48.50 = £140.55pw.
Remember ESA is paid fortnightly, whereas UC is paid monthly, as you rightly stated NS/CB ESA will be deducted £ for £ from your UC allowance.
Gary
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
