I found a classified advert in the 'Holloway Press' dated 16th June 1950: “GRAMOPHONE records, expd. female assistant required by Morgans of Muswell Hill, 9 The Exchange, N.10. Tud 1238.”
… and this advert in the 20th October 1950 edition: “MORGANS OF MUSWELL HILL. NOT JUST A NAME - BUT A SERVICE, RADIO - TELEVISION - RECORDS - ELECTRICAL SUPPLIES and INSTALLATIONS. 9 THE EXCHANGE, N.10 (corner of Dukes Avenue). TUD 1238.”
… and this advert in the 20th October 1950 edition: “MORGANS OF MUSWELL HILL. NOT JUST A NAME - BUT A SERVICE, RADIO - TELEVISION - RECORDS - ELECTRICAL SUPPLIES and INSTALLATIONS. 9 THE EXCHANGE, N.10 (corner of Dukes Avenue). TUD 1238.”