uk – Transit Without Visa through Heathrow for travel from Canada – is it still valid during COVID?

I am a Canadian permanent resident with Indian passport. I will be traveling on BA flight from Toronto to Mumbai on a single ticket which has a layover of 23 hours in London. This means I would have to leave Heathrow.

I tweeted Heathrow Airport and asked them about the quarantine mandate (Canada is not on the exempt list) and they said I am exempt from the 14 day quarantine as long as I quarantine for my entire stay in London (just a night) and travel only from Heathrow to hotel and hotel back to Heathrow to take the connecting flight.

However, just to be sure, I wanted to check if anyone has been through a similar situation in recent times and if they had any trouble at the UK border?