Maybe the annual servicing helped. Obviously not BG though, or they would have sold him several new ones in that time.
http://www.shropshirestar.com/news/2012/06/22/is-this-the-oldest-boiler-in-shropshire/
http://www.shropshirestar.com/news/2012/06/22/is-this-the-oldest-boiler-in-shropshire/
