It would depend on where you are from in the UK, and how close you are to a distribution point. In London, it is generally between next day and a week at worst,

It would depend on where you are from in the UK, and how close you are to a distribution point. In London, it is generally between next day and a week at worst, for some items. I expect this situation to change over the coming weeks. However, grouping things into a single delivery and only ordering essentials is of supreme importance right now, in order to give everyone a chance.