By Sara Sjolin, MarketWatch

LONDON (MarketWatch)--Most European stock markets finished the week on a high note on Friday, with the benchmark Stoxx Europe 60 index ending at the highest level in two weeks, after Scotland voted to stay within the United Kingdom.

The upbeat trading mood came as the final result of the Scottish referendum showed 55% of the voters rejected the independence questions, a much more convincing win that polls had indicated leading up to the vote. Read: Scotland's 'No' vote: What strategists are saying

Market reaction: The pan-European Stoxx Europe 600 index climbed 0.2% to close at 348.52, marking the highest close since Sept. 4. On the week, the benchmark rallied 1.2%

The U.K.'s FTSE 100 index climbed 0.3% to 6,837.92, in relief that the U.K. will stay together. Scotland-exposed banks, such as Royal Bank of Scotland Group PLC (RBS), rising 2.5%, and Lloyds Banking Group PLC (LYG), up 1.3%, helped lift the index.

The pound (GBPUSD) jumped to as high as $1.6526 overnight when initial polling results pointed to a majority of Scottish voters rejecting independence. However, the rally fizzled on Friday morning, which some analysts explained by short-term investors taking some profits. Sterling traded at $1.6311 at the time of the European close, down from around $1.6400 when the polls closed on Thursday.

French downgrade rumors: France's CAC 40 index underperformed the other major bourses and ended 0.1% lower at 4,461.22 amid rumors that Moody's Investors Service might downgrade the country's credit rating later on Friday.

The rumor started when French newspaper L'Opinion Thursday reported that Moody's had given the French government notice about a possible downgrade of its credit rating to AA2 from AA1. However, the French government said it had not been notified and Finance Minister Michel Sapin said on Friday he wants the country's market regulator to open an investigation into the newspaper report.

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