In the UK, it is currently

Wednesday the 16th of January, 2019 at 4:35am UK time

That's:
January 16, 2019, 4:35 am in Abidjan
January 16, 2019, 3:05 pm in Adelaide
January 16, 2019, 5:35 am in Amsterdam
January 16, 2019, 5:35 pm in Auckland
January 16, 2019, 5:35 am in Berlin
January 16, 2019, 12:35 am in Bermuda
January 15, 2019, 11:35 pm in Bogota
January 16, 2019, 5:35 am in Bratislava
January 16, 2019, 2:35 am in Brasilia
January 16, 2019, 1:35 am in Buenos Aires
January 16, 2019, 12:35 am in Caracas
January 15, 2019, 10:35 pm in Chicago
January 16, 2019, 5:35 am in Copenhagen
January 15, 2019, 10:35 pm in Costa Rica
January 16, 2019, 8:35 am in Dubai
January 16, 2019, 4:35 am in Dublin
January 15, 2019, 10:35 pm in Guatemala
January 16, 2019, 6:35 am in Helsinki
January 16, 2019, 9:05 am in Kabul
January 16, 2019, 7:35 am in Kampala
January 16, 2019, 4:35 am in Lisbon
January 16, 2019, 5:35 am in Longyearbyen
January 15, 2019, 8:35 pm in Los Angeles
January 16, 2019, 5:35 am in Madrid
January 16, 2019, 12:35 am in Manaus
January 16, 2019, 12:35 pm in Manila
January 16, 2019, 7:35 am in Mayotte
January 16, 2019, 3:35 pm in Melbourne
January 15, 2019, 10:35 pm in Mexico City
January 15, 2019, 11:35 pm in Montreal
January 16, 2019, 7:35 am in Moscow
January 16, 2019, 7:35 am in Nairobi
January 15, 2019, 11:35 pm in New York
January 16, 2019, 5:35 am in Paris
January 16, 2019, 12:35 pm in Perth
January 16, 2019, 5:35 am in Podgorica
January 16, 2019, 7:35 am in Qatar
January 16, 2019, 2:35 pm in Queensland
January 16, 2019, 4:35 am in Reykjavik
January 16, 2019, 6:35 am in Riga
January 16, 2019, 5:35 am in Rome
January 16, 2019, 5:35 pm in the South Pole
January 16, 2019, 5:35 am in Stockholm
January 15, 2019, 11:35 pm in Toronto
January 15, 2019, 8:35 pm in Vancouver
January 16, 2019, 3:35 pm in Victoria
January 16, 2019, 5:35 am in Vienna
January 16, 2019, 5:35 am in Warsaw
January 16, 2019, 5:35 am in Zurich

These time zones are provided for your convenience, but are not guaranteed. You may want to double check the time wherever you happen to be