In my youth (a very long time ago!) there were adverts for Henry's Radio on the rear cover of Practical Wireless and Radio Constructor, I think. The most memorable adverts were for Ranger 2 and Ranger 3 radios covering "Medium wave, top band and shipping". I notice that details of the Ranger 3 are available on the Radio Museum website. I always wanted one but could not afford it with my pocket money.
See http://www.radiomuseum.org/r/hernrys_ranger_3.html .