Professional Engineers in the UK who are also Chartered Marketers?

Why is it that I can find no other Professional Engineers in the UK who are also Chartered Marketers?

I have searched the membership lists of the professional engineering institutions of which I am a member, and I have searched the marketing, management and consultancy professional institutions of which I am also a member, but – with the single exception of myself – I cannot find any other person who is listed as a professional member in both camps.

I believe that training, qualifications and experience in both disciplines would allow those – like me – who wish to assist technological and engineering companies to grow, to achieve the best results for my engineering and business-to-business clients. But no-one else seems to have this view – or do they? I welcome comment…..