Where appropriate I do pass on your details to the HR team and I leave it to them to get in touch if they think there is a suitable role. However there is an official route to apply that also overcome the possibility that I have missed your message (I get over 200 emails a day).
Take a look at the new Tesco careers web site that has been launched with career-seekers in mind. It's packed with information about Tesco, career options, and "how we do things round here".
Head to http://www.tesco-careers.com for all the information you can handle about careers at Tesco. Maybe I'll see you in our office sometime soon!