Transact SQL :: Display Normal General Date Format

I've come accross this code and need to alter it to display a normal General Date format.

CASE WHEN p.BIRTHDTTM IS NULL THEN ''
ELSE RIGHT('0' + LTRIM(CONVERT(VARCHAR(20), BIRTHDTTM, 113)) , 20)
END AS BIRTHDTTM

The original data (which is a DOB field) looks like this

1936-08-14 00:00:00.000

And the code above is turning it into this which is good but means I cannot then format in SSRS

14 Aug 1936 00:00:00

So ideally I'd like the code above to be altered so that it gives me

14/08/1936