LONDON.- A St Paul’s cathedral spokesman announced that Sir Paul Getty, the millionaire art collector and philanthropist, has given £5m to restore the west front of the building. The front is familiar to millions of television viewers worldwide. Princess Diana swept up the steps in yards of silk and lace to be married, and only three weeks ago the gold state coach stopped at the bottom of the steps as the Queen arrived to celebrate her golden jubilee. What the television viewers do not see, but is painfully visible to the two million tourists and worshippers who come each year, is the moldering carving, rusted iron work, and rain and soot streaked stone. Apart from 300 years of filthy London air and rain, the cathedral’s problems have mainly been caused by Sir Christopher Wren’s crowning glory, the 64,000-ton dome, which has gradually been crushing the building under its weight, causing structural problems. The cathedral is half way towards raising £40m needed for the most comprehensive restoration in its history. The banking family Fleming paid the £10m cost of cleaning the interior. It is hoped that all the work will be finished for the tercentenary of its completion, in 2008.