If anyone wants an alternative, check out spiers salads. Full disclosure they are Part owned by my wife’s cousin (who lives in brockley) but we have ordered fruit and veg through them and its great. I know others who have as well and reviews have been very good.
They used to run salad bars in the city and like others they have had to adapt, or indeed die. They too were struggling a bit to keep up with the incredible demand but have since joined forces with a local delivery company (who themselves have had to adapt from their original model delivering food to restaurants) to increase capacity to around 500 deliveries a day to south east london. Monday is full but Tuesday has space.
Check them out.
Stay safe everyone.