Enforcement action is set to be taken against a Norwich bar owner after claims were made that a sound system had been installed in a neighbouring building without consent.

Norwich City Council's planning committee will this week hear how it is believed that 27 Castle Meadow, behind Havana in London Street, has been used to house a music sound system for the bar's roof terrace and smoking shelter without authorisation.

It is also believed that a bar serving area has been put up in the roof terrace area without consent.

The report, which will go before the committee on Thursday, asks to take appropriate enforcement action.

But Havana owner Patrick Fisher has denied the claims and said the building is used for another business venture.

The report says: 'Investigations over the New Year period by planning and licensing enforcement officers and police revealed that the second floor of 27 Castle Meadow overlooking the terrace was evidently in full use as part of the bar, with a substantial DJ/sound system installed, including large full-height loudspeakers positioned in the second floor windows facing out onto the terrace.

'Although the operator asserts that this part of the building was being used at the time of the investigation solely for a private party, officers are satisfied on the basis of the evidence to hand that the use is intended to be regular, permanent and of a public nature.

'It is considered that the use of the second floor of 27 Castle Meadow for these purposes constitutes a change of use of this part of the building which requires planning permission.'

Havana opened about two years ago after the venue was converted from a restaurant into a late-night bar.

Permission was later granted for 27 Castle Meadow, a grade II listed building, to accommodate toilets and the fire escape corridor for the bar.

At the end of last year, more than a thousand people joined a Facebook campaign to restore live music to the rooftop terrace of Havana. The venue used to host the popular live music and DJ events which lasted into the early hours of the morning, but they were stopped following complaints about noise.

Mr Fisher said the premises in Castle Meadow was used for Global Binding Engineers, a company he jointly owns.

The meeting will be held at City Hall at 10am.