§ The Prime MinisterI visited Norway on 11 and 12 September at the invitation of the Norwegian Government. I had useful talks with the Norwegian Prime Minister which underlined the .close friendship between Britain and Norway and our co-operation in many fields, including defence and North sea oil. I was able to inform the Norwegian Government of new measures we have taken to reduce sulphur dioxide emissions from British coal-fired power stations. I also visited Tromso in northern Norway and NATO installations near Oslo. I was honoured to have an audience of His Majesty King Olav V.