Hi justasking2, i've had a look on citezens advise and the nearest thing i can find is this, not sure if you qualify (but your husband is on disability so maybe?) Best to contct the Welfare office as it suggests. Best of luck
Free Travel to Health Services
Social Welfare recipients or their dependants who incur ongoing travel expenses for treatment may be entitled to a Travel Supplement. In order to qualify you must satisfy the general conditions for receipt of Supplementary Welfare Allowance. You can apply to your local Community Welfare Officer in the Health Centre.