This blurb appears in a publisher's advertisement in The Spectator for February 18, 1949. It's lifted, according to the byline, from a book review Henry Reed wrote for The Observer, on Gerard Hopkins' translation of selections from Proust (London: Allan Wingate, 1948).

'We have the charming experience of meeting Proust outside the turmoil of creation, chatting, confiding, preparing... the same character, the same voice, that come through the translation of Scott-Moncrieff come through Mr. Hopkins's no less sensitive versions.' Henry Reed, Observer. 10s 6d net

Not only is this the first record I have of Reed reviewing this particular work, but it's actually the first clue I have to any Reed review appearing in The Observer, at any time. Are there more? I bet there are more.

Tracking down a Observer review is going to be difficult. I don't know the date (but we can easily surmise it was sometime in late 1948 or January 1949), and I can't find a library within easy reach that has the paper from the 1940s, either in print or on microfilm. I'll check Book Review Digest, etc., and see if I can pinpoint it.

(And what do we have, here? In The Guardian News & Media Archive catalog, is a record for a photograph of "Reed, Henry: Radio," in a file for "Prints by Guardian/Observer photographers.")