How long are repairs taking at the moment?

I woke up late for work on Monday 4th to discover my iPhone 11pro had met with its bitter end in the night. It wont reset/enter DFU/charge/show on find my iphone or in iTunes or Finder, so given all the stores are closed in the UK at the moment, I’ve had to go down the send it in route. I had a message to say the service box was on the way via UKMail and the link would work within 24 hours, but the tracking link still says the item is not yet within the carrier network, and it's been three working days. How long is this supposed to take?

I’m a bit worried about how long the repair will take too. I’m a key worker and I use my phone to support my work. I’ve seen the estimate of 6-8 working days but does anybody know what the current turn-around actually is?

Thanks for any info.