Once again people reporting poor arrangements for this. A couple returning from South Africa after Honeymoon are quoted in The Independent:
The couple flew back from South Africa on December 2, after having their original flight home cancelled due to the travel ban.
They said it took almost six hours to get from the plane at Heathrow to their hotel, the Holiday Inn Express at Heathrow Terminal 4, including waiting in a bus from the terminal to the hotel. “They put us onto a bus for the 30-second journey, but we were on the bus for three hours”, Alex explained. “We were on a bus full of people, (with) no ventilation. It was the most unorganised mess ever. People were crying. It just seemed like something from a film, it was a bit mad,” he added.
After arriving at the hotel itself, the pair said they had food and other supplies delivered by their family, because the hotel food is “inedible”. “You’re paying serious money and… it’s not substantial meals. Half the time it’s cold, half the time it’s just inedible”, Alex said.
The article stated:
Travellers returning from red list countries originally faced a cost of £1,750 to quarantine in a hotel when the scheme was first announced in February. The price has now risen to £2,285 for the 11-night stay.
This is just one report but since it is very similar to friends of mine who had to return from South Africa in last quarantine - I can believe it.