UK financial regulators on Wednesday gave the first official recognition of intensifying City concern about the impact some overseas listings are having on the standards and reputation of London.

Video: Daily view

Norma Cohen looks at the FSA action and whether NYSE Euronext can compete with London for international listings

The Financial Services Authority said it will canvass opinions in the City about how to clarify the regulations to make clear whether companies have chosen light-touch listing methods, which can offer investors less protection. It said it was calling for formal debate about the balance between attracting new flotations and maintaining quality.