Built in 1940 and designed by A.E. Wiseman. Its claim to fame is its eastern round tower, in a very Charles Holden style. Subsequent changes have led to many of the windows being partially bricked up. The two apsidal projections contain a Lady Chapel on one side and vestries on the other.
London Churches in photographs 
we’re baptisms taking place in st. Patrick‘s in 1947?
I imagine so, but you would need to contact the church