Ah ok that's interesting, that doesn't sound fun. Over here the store has a legal obligation to process the RMA for the full length of the manufacturers warranty - so when Corsair says their RAM is lifetime warranty, I can RMA that RAM by returning it to the store I bought it from 10 years ago, as long as I have the invoice
I'm just sticking to Corsair or Kingston for a majority of things.
I've just spoken to
Crucial on the phone, 0800 number, and got through to an Indian call centre, took a while having to repeat what he said. For both Ram and SSDs, they get returned to a UK address, and the RMA then is dealt with by the Czech Republic. Micron in Kilbride, Scotland, which originally handled all UK RMAs, ceased to exist around year 2019. The building is now the home of Ferring Pharmaceuticals when looking on street view, the sign used to say Micron.
On their website it states
"You are responsible for any duties and taxes due on replacement product sent from Micron CPG."
Source: https://uk.crucial.com/company/warranty
I had to RMA some (Aqua Blue) DDR1 to GSkill, obviously 20 year ago and took six weeks through OcUK. You would assume if you go through any retailer, they will ship them off to the manufacturer.
As for
Corsair, another retailer in the UK handles all RMAs, even if you buy from any other retailer. I remember even 20+ year ago, they was primarily Corsair only for DDR1 and DDR2 at the very least.
Kingston will be quick, as its their Kingston base in the UK, even if you go through the retailer.