It's a bit meh for Fortnum & Mason. You don't even get a wicker hamper. Hummus, muhammara, crudites, smoked salmon and pre-cooked quails eggs are all pretty standard items that you can get from M&S and Waitrose. There isn't anything really special in the hamper. They aren't F&M products.
If you want F&M's best, I'd probably go for a bespoke hamper filled with boxes and boxes of F&M rose and violet creams where you chose what goes in it over the picnic hamper.
I'm assuming you are in London as F&M only deliver the picnic hamper within the M25. If you want the best food and aren't bothered about a souvenir hamper, a lot of fancy delis, grocers, cheese shops, patisseries, gelaterias and wine merchants are on Deliveroo during the day since lockdown, if you have anywhere nice near you. Borough Market is delivering too. Farmdrop has some great suppliers as well (their Kentish strawberries taste like my childhood).