The non-confidence motion against Bulgaria's prime minister to be put to the vote on Thursday will not affect the investors' interest in the country. This is what Borislav Vladimirov, Emerging Markets Director of UBS-London told Bulgarian Darik radio. According to him, there are trends of decline for the spread of Bulgarian bonds traded at the London stock exchange. The spread hit the lowest values in January and now moves between 200 and 240 basic points. This is much beyond the level, which is adequate to Bulgaria's credit rating. The last days saw a new drop of 20-25 points due to the unexpected upgrade of the country's credit rating by Standard & Poor's.