Travel advice back to UK from Jamaica after covid-19 outbreak

apologies for sloppy writing due to my current situation. I am currently in Jamaica with TUI all inclusive holiday. Just an hour ago I got email from Gov.Uk Travel advice stating following.

The Foreign and Commonwealth Office advise against all but essential travel to Jamaica due to restrictions imposed by the Jamaican authorities in response to the coronavirus (Covid-19) pandemic. British nationals who wish to leave Jamaica are encouraged to make travel arrangements urgently before airlines reduce direct and indirect flight options. (‘Summary’ and ‘Health’ page)

Time updated 11:12pm, 14 March 2020

Reference https://www.gov.uk/foreign-travel-advice/jamaica

Does this mean or is there an indirect signals that UK government would be closing borders for all affected countries soon?

I reached out to TUI asking specifically that whether TUI would be arranging immediate flight in case of sudden news from UK gov to close borders in short period of time? Their response was lengthy but in essence they said they will try their best to bring everyone home if such case occurs.

In addition I also got to know that outgoing flights from UK to Jamaica are suspended from 16th of March.

I myself and my partner are immigrant in UK and resident on Tier 2. Given the situation I am very confused on what should be my next move?

Should I arrange other flights immediately to return home or wait until next update?

Ps. I do have travel insurance, my scheduled flight is on 20th of March