Judgment of the General Court (Fifth Chamber) of 15 September 2021.#Richard Ashworth and Others v European Parliament.#Law governing the institutions – Rules governing the payment of expenses and allowances to Members of the Parliament – Amendment of the additional voluntary pension scheme – Notice fixing additional voluntary pension rights – Plea of illegality – Competence of the Bureau of the Parliament – Rights acquired or in the process of being acquired – Proportionality – Equal treatment – Legal certainty.#Cases T-720/19 to T-725/19.