There is an approximation of your range shown on the display, you can switch between range or percentage by tapping on the number. A much better range figure is on the energy screen, that number is based on your actual driving as opposed the the EPA, for us, or WLTP, for you. I have a 2019 AWD, it's range is down to about 280 vs 310 when new, 80% of 280 is 224. Assuming you have home charging then you won't need anything like 224 for daily driving, it's more likely to be 50 or 60 miles. Even for local area driving it's not going to be anything like 200 miles, for me a round trip to Boston is 100 miles, to Portsmouth NH it's 125 miles. Use A Better Route Planner or Google Maps to figure out how far you need to drive in your local metropolitan area. I did a quick check of Bedford to London, it's 60 miles so 120 miles round trip, not a problem at 80%. If you are driving to Scotland then you might want to charge to 90%, which is still fine for the battery, that will give you some flexibility about which Superchargers you stop at.
For road trips use A Better Route Planner to plan your stops. I do weekly road trips around New England of 300-400 miles, I doubt that's even possible in the UK. Supercharging doesn't add any time to those trips because the distance between stops is governed by bladder size not battery size. When traveling you don't top up the battery the way you would a gas tank, you only need enough to get you to the next stop. Our stops tend to be around 15 minutes which is the time it takes to walk to the bathroom, do our business, maybe grab a donut or a candy bar as a courtesy to the store that has the bathroom, and walk back. That's enough to add about 120-150 miles of range.
