Goldman Sachs made important changes to its view on several of the main UK life assurance companies on Tuesday, according to reports, due to what it seems to think is a trend towards a greater commoditisation of the industry´s products. Thus, it has lowered Aviva to 'neutral' from 'buy' and Standard Life to 'sell' from 'neutral'. Prudential, however, has been upgraded to 'buy' from 'neutral'. Old Mutual continues to be its top pick in the sector. AB