adjustment noticemeans a notice (other than a notice which would require payment ofan amount of £0)— (a) which is given under regulation 26(2) of, or paragraph 7(2) ofSchedule 1 or paragraph 4(2) of Schedule 2 to, the Community Charges(Administration and Enforcement) Regulations 1989 by an English chargingauthority to a person in respect of his liability to pay an amount undera community charge demand notice;
the 1991 Regulationsmeans the Community Charges and Non-Domestic Rating (DemandNotices) (England) Regulations 1991;