Not posh enough for Labour?

I watched the Andrew Neil show, Posh and Posher, last night on BBC2 with interest. I thought it was an excellent programme, albeit a vehicle for Neil to push the grammar school system, but I did feel pretty low by the end of the show. I do have some political ambitions; the idea of helping to improve society the way that we live and function day to day does excite me and I am constantly trying to up skill myself to move in this direction. Some of the statistics mentioned last night left me feeling that maybe I am dreamer. I do have a degree, from an ex-polytechnic, and I do have a career; I am a Director at a FTSE 250 business and furthermore I have lived a life - I am 34, have a family and yet it seems that because I didn't go to Oxbridge, have family connections in the party or take an unpaid internship as a graduate (how do people afford to do that?!!) my chances of becoming an MP are very slim.
With the right energy this can definitely be fought against, my CLP, Tooting, is thriving with a real mix of people and I can imagine at least two members becoming MP's in the future. But we are in London and hence have access to numerous groups, societies and networking opportunities. At some point my family will relocate, probably to Bristol, and I do worry whether this will further impede my ambitions. Surely it shouldn't be so; the whole point of our democracy should be that everyone in society is represented and logic would dictate that in a modern Britain we don't need to be deferential to a political class to blindly state our case at Westminster.
To be fair to Ed Miliband he has talked about turning the tide on this and he seems to accept that the Labour Party is moving in a dangerous direction.  Perhaps his commitment to Movement for Change will help because of its programme of training community leaders, some of whom will surely harbour political ambitions? The recent Oldham bi-election did demonstrate that constituents do prefer local candidates and perhaps the Labour party needs to promote this further and end the practice of parachuting Westminster careerists into the safest seats in country? The success of local MP's such as Sadiq Khan and Dawn Primarolo in my two home cities shows that this is surely the way forward?