I've worked for Hatfield branch back in 2014 and quit after 8-9 months. 3 months later reapplied to Enfield as it was closer to my address. The difference between those to depots are that Enfield delivered Morrisons goods. Wich means less posh customers, less houses instead you get more flats, more stairs and no lifts.
Job is easy at the begining, no many drops no hard areas but once you improved it gets harder, it gets to the point that you cant no longer do it cus at some point your body gives up on you, mentally and physically. Personally I think that delivery to central London should be prohibited as its not possible to park and deliver anywhere in this place especialy in the time slot company force you to stick to.
Apart of great customer skills and driving abilities you will be required to have ability to calm yourself down very often. Also usful may become to have a lot of physical strength and some fighting skills. Not only to carry the shopping to the top floor of 4 story building while your van is parked half a mile down the road but you may need it if you find yourself in trouble with local mob trying rob your van, as it happeed to me or fuming angry drivers because you blocked the narrow road for 10min due to no parking. I've worked there very short period of time but could write a book about this job. The good think about this company is that ppl are very nice and you get to meet some top guys there. Unfortunately low pay, highly stressful job environment(stress regarding only driving and parking in busy city) and weird hours disqualifies this job in my books.
being your own boss on the road, early finishes
low pay, high level of stress, unsociable hours