I am 76 — should I reveal my age when applying for board positions?

I am an experienced chair, non-executive director and trustee and have worked in the City for more than 55 years. However, over the past five, I have not received a positive response to any of my board applications. I present myself as an active and experienced 76-year-old who likes helping companies and management. Am I wrong to disclose my age and experience up front? Male, 70s

Jonathan Black is director of the Careers Service at the University of Oxford. Every fortnight he answers your questions on personal and career development, and working life. Do you have a question for him? Email dear.jonathan@ft.com