HMRC have published a list of professional bodies, associations and learned societies which it has approved for tax-deductible fees. But the list, as of June 2015, is only a starting point for showing group(s) a taxpayer might claim tax deduction for membership of. The list is not definitive, nor does it override the law. So, depending on individual circumstances, HMRC might still query a tax deduction of a listed group or a taxpayer may have a case for membership of a non-listed group.
Tax Barrister, Accountant