RBS Intermediary Partners is to streamline its First Active, RBS, NatWest and One Account brands. Due to high business volumes putting 'significant pressure' on service levels, RBS has taken the temporary measure to streamline all four brands. Chris Pearson, director of intermediary mortgages at Royal Bank of Scotland, explained: In order to protect service levels we have reviewed our product range and on Tuesday 1 April, we will be introducing new rates and will temporarily be offering a streamlined product range.