1984—BBC Designs Department, London
   
 The BBC is a very large user of audio equipment. Until recent times they also had the engineering resources to specify, develop and even manufacture equipment that was not available in the marketplace. At BBC Designs Julian was involved in studio sound equipment development and this focused on prototyping methods of working with digital audio in the broadcast production chain.
   

1988—Cambridge University Radio Astronomy Group
 
 As a step away from digital audio Julian joined a team of engineers developing instruments for the James Clark Maxwell Telescope in Hawaii. This is a millimetre wave radio telescope and he worked on the 345 GHz receiver used mainly for analysing the early stages of star formation. Unfortunately the prevailing economic climate meant that he had to go back to a real job before he had a chance to work ‘on-site’ (Hawaii—not deep space!).
 
  1989—Prism Sound, Cambridge
   
  Julian joined Prism as their first staff engineer and was there for nine years. He initially worked a consultant and was responsible for the development of products for a variety of clients. This included product design for audio equipment manufacturers and the design and manufacture of custom products for broadcasters. When the business focus moved towards products Julian was involved in the development of a range of high performance converters.
   

1998—nanophon, Cambridge
 
  Julian formed nanophon in May 1998 as principal and chief engineer.
 
 

Publications
   

9 papers published as AES convention pre-prints or conference proceedings: