Worked OK for me!
Just leaving this review as I placed an order with the Glitch Production store and hadn't come across SF Express as a courier before so I was worried after reading the reviews here. The tracking didn't update on the courier's website but I use the iPhone app "Parcel" which tracked the shipment perfectly and showed every update from both China and the UK, with the last mile courier being Evri. I ordered my item on 18/03 and it was delivered today, 25/03, so much quicker than I usually get parcels from China. Not sure if I'm an outlier or not!