Finally I got hold of this very rare and quite expensive UK FDC. UK commemorated the UK and world Centenary of the Salvation Army in 1965. Issued 09 Aug. This is a Philcover handpainted Blood and Fire cachet.  Remark: Standard cat. value with London EC postmark is £ 35. A similar Philcover FDC was sold on Ebay July 2017 at £97. Rare cachets like this will typically sell massively above catalogue prices.