To
teddy2018, this is definitely not a stupid thing to ask at all, I was worried sick too when similar thing happened, given my 5 years being in this hobby. According to my experience with shipping to UK, however, when it comes to tracking, it is a hit and miss kinda thing as soon as the item lands in the UK. Meaning that sometimes you can track the same tracking number through UK's postal delivery website, whilst sometimes this simply does not work.
The worst was when I shipped a watch to Belfast and mistaken it rather being in Ireland than the UK. Took me more than 1 month to have it delivered. Part of me said that the item might have been gone or stolen because I could not track it at all (the tracking status from my local postal service website stayed the same for 3-4 weeks-ish), yet it was still being delivered in the end of the day. Point being, even if you can't track your item, just be patient because it would eventually reach you. Cheers bro and all the best with this. Please do post some pics as soon as you received the watch
"Tienes que correr riesgos, en esta vida"