The Astronomical New Moon is on Friday 30 August 2019 at 11.37 am. The crescent will not be visible on this day.
The calculations for crescent visibility on Saturday 31 August 2019 for London are as follows:-
Crescent age. 32 hours 14 minutes
Crescent altitude 8.40 degrees
Crescent elongation 19.47 degrees
The crescent can be easily seen by naked eye.
1st Muharram 1441AH will Inshallah be on Sunday 1 September 2019 in Europe.