I currently have a chest freezer in my hall while it waits for me to move stuff so I can put it where it is meant to be. I just covered it with a throw people don't really notice or seem to think it's a large console table but it's not a gigantic one.
I currently have 3 on grid freezers running in my house (2 chest freezers & 1 fridge freezer but it's a big American double door one all of which are A with varying amounts of plus signs after them rated)
My elec running costs are less than 120w/approx 2p per hour for those (drops to 83w/approx. 1p per hour at least half the time but depends on the freezers as sometimes they have to use more elec to maintain steady temp when weather is warmer) as well as things that are always on such as the gas boiler, phones (2 cordless landline ones so plugged in all the time plus a mobile plugged in), wired in smoke alarms, there's always something else like a tablet or a rechargeable backup battery/lantern etc... plugged in charging, laptop, router, 3 tvs on standby & various now tv boxes & amazon fire sticks, dvd players etc.. on all of them, a couple of digital radios/alarms just showing the time plus 2 lights on in the house right now... according to my meter - I just went & checked it.
I could probably halve that if I remembered to turn all the tv etc.. bits off.
Always worth checking the "how much power it uses" info & thinking about where you put it.
When I moved into my house years back, the only place to put the fridge/freezer was right next to all the hot pipes which ran down inside the wall to all the ground floor radiators just beside the kitchen rad with the wall behind it having a rad on the other side.
It used a lot more electricity there because it was heated on 3 sides all winter when the heating was on or if you used hot water in the kitchen.
I moved it & the usage dropped to about half what it had been.
I do also have a dehydrator & a canner so I have plenty of other types of food stored - I'm not just relying on freezers.
Currently it's all about the dehydrated shitake mushrooms here.
Should point out I'm not a Brexit prepper specifically, I've been a prepper for years & always will be so I keep more on hand than a Brexit prepper would be looking at.