‘A judgment made in open court takes effect when it is made and not when it is subsequently sealed. The lapse of time between the making of an order in open court and sealing it may be taken by the unsuccessful party as an opportunity to rehearse legal arguments or to produce new evidence to persuade the court to revisit and amend its order before it is sealed.’
Law Society's Gazette, 18th January 2021
Source: www.lawgazette.co.uk