Yes, some chest freezers will not work outside. It's to do with their thermostats I think. Some freezers cut off when the temperature gets too low is 2 to -2 degs therefore the food defrosts. I know of a few that guarantee freezer still to work at minus 17 Deg . These include beko and fridge master. I learnt this by buying a swan freezer and as soon as the temp hut 6 degs it turned itself off.. so crazy. Be sure to ask the specs of the item first.
Argos website states it is suitable for out buildings.
It says ST climate class in the specification :/ https://www.beko.co.uk/support/faqs/fridges/what-are-climate-class-ratings-and-how-does-this-effect-where-i
I've had the RHCF200 197L version - bought from Tesco Direct back in 2016. That model did state it was suitable for garage use and has performed well. It's a simple/basic/effective design - and a real HUKD bargain back then at £135 including disposal of 30yr old chest freezer. That said the Russell Hobbs brand owners were/are clearly just slapping a couple of stickers on a (probably Chinese) chest, so may be different model/mechanics/electrics by now. The RHCF200 manual specifically states "This Appliance is suitable to be placed in garages". Cant see any such reference in the RHCF150.