Work is under way to replace gas mains under the streets around east London’s famous Petticoat Lane street-market.

National grid is replacing some of London’s ageing Victorian metal pipes, many up to 150 years old, feeding into properties around Whitechapel and Aldgate with more durable material.

The work began at Petticoat Lane, officially known as Middlesex Street, which is expected to last till the end of the month, while work in nearby Goulston Street and New Goulston Street is continuing until mid-May, both being closed to through-traffic with parking and loading bays suspended.

Biggest disruption is along the A11 Aldgate High Street and Whitechapel High Street, which is expected to run for the next nine weeks.

“Replacing the old mains helps ensure reliable gas supplies to the local businesses and homes,” National Grid’s Mick Morris said. “New, smaller pipes are being inserted inside the old mains wherever possible, which means less digging and disruption.”

The work co-ordinated with Tower Hamlets council aims to avoid disrupting supplies and “keep shops and business open” while work is carried out. Trade along the Sundaqy market is unafflected, while National Grid has promised to keep local shopkeepers informed about progress.