Another sign British economy is on the right track appeared on Tuesday as survey showed mood among London fund managers and analysts improved significantly on the back of recent stronger-than-expected indicators. London-based Capital Spreads said that 82% of 200 respondents expect to nation's economy to build up steam over the next 12 months, up from 69% in the previous year. Moreover, 62% view the improvement as sustainable and not built on a housing market only. However, a cautious sign came from 30% of investors, who are saying the economy is a bubble based on a property boom, though they predict it to grow further for the foreseeable future. Meanwhile, only 6% expect the economy to deteriorate, down from 8%.