Nope, they don't cave comparable performance for the price. For the same price you get inferior acceleration and/or range. Only base model Mach-E looks comparable to rear wheel Model 3 at similar price, but you still get somewhat inferior range.
Uh, no. Tesla has a lot of competition nowadays.
The base Model 3 is 5.8s to 60, this will set you back £48.5k excl fees of about £1k.
The Ioniq 5 "77kWh 325PS Performance" is 5.1s to 60 and £50k. And it'll go at least as far as the Model 3 and comes with a 5 yr warranty on the car and 8 yr on the battery.
The Polestar 2 Long Range has 402hp and is 4.5s to 60 and just under £50k. Also has similar range, though fast charging speed not quite as good, and warranty is only 3 years.
There are others, but Tesla has lost its performance advantage except in the sub 3 second range, where it's only really Porsche and Audi on the same platform in competition, but Tesla are down to 2 seconds there. Which is definitely cool but you probably won't run a mass auto production business on £120k sedans.
At the lower end Tesla has serious competition. If you don't care about 0-60, you can get an ID.3 77kWh which will go a similar range to the LR Model 3, and still get to 60 in a decent 6.5 seconds (VW advertise 7.3 seconds, but they undersell deliberately.) That will set you back £42k.