Judgment of the General Court (Fourth Chamber) of 17 May 2023.#Alexander Chambers and Others v European Commission.#Civil service – Members of the temporary staff – Members of the contract staff – Reimbursement of expenses – Travel expenses – Consequences of the departure of the United Kingdom from the European Union – Place of origin located in a third country – Withdrawal of entitlement to annual flat-rate payment for travel expenses – Error of assessment – Equal treatment.#Case T-177/22.