I have a New World Plan 7 Cooker, the lid is supposed to turn off the gas when it shuts as a fail safe but it no longer does. I had a British Gas Engineer round yesterday to install new smart meters, and found this problem and had to condemn the cooker!!!! Is this a repair I may be able to do myself?
http://www.diynot.com/forums/viewtopic.php?t=244304 here is a link to possible causes,new world sell parts too so you can fix it yourself,i would try a bit of wd 40 where the button is to cut it off just might have greased up over the years.