Can a bailiff turn up at 9pm and start removing goods past 9pm?

Yes

When a bailiff has, during permitted hours already entered or re-entered premises, he may, outside such permitted hours, remain on the premises, if it is reasonably necessary for him to continue to search for and take control of goods, inspect controlled goods or remove controlled goods for storage or sale, provided the duration of time spent is reasonable. ^[1]

^{[1] Regulation 22(4) of the Taking Control of Goods Regulations 2013}