A pie and mash shop described as "a unique part of the capital's history" has been awarded Grade II listing.
L Manze Eel, Pie and Mash Shop on Walthamstow High Street, east London, has been recognised for its "beautifully preserved interiors", English Heritage said.
Heritage Minister Ed Vaizey said: "Pie and mash shops are as intrinsically linked to London as black cabs and beefeaters. L Manze's in Walthamstow is a unique part of the capital's heritage and is as relevant and popular now as it was when it first opened in the 1920s."
Opened in 1929 by Luigi Manze, the acclaimed pie shop's interiors were designed by architect Herbert Wright who introduced the traditional gilt lettering, marble counters, white-tiled decor and mirrors which remain to this day.
The Manze family ran the east London eatery until 1970 and current owner Jacqueline Cooper and family believe the listing is great for the area.
"It's really a gem of Walthamstow and I'm just delighted because the shop is so beautiful," Mrs Cooper said.
Mrs Cooper, whose family have run the shop since 1986, said pie and mash popularity was on the rise too.
"I think it's becoming a little trendier now - especially with everyone knowing David Beckham eats it."
Roger Bowdler, designation director for English Heritage, said: "This 1920s example, with it beautifully preserved interior, is among the best of an increasingly rare kind, and strongly deserves to be listed."