Well, I got a response from my MP (Justine Greening).
It started off "Dear Ms Ryan,". This is not a good start since my name is not Ms Ryan. Still, maybe it's a term of endearment or something. I'm sure it doesn't mean that this is a form reply she's cut-and-pasted from another one. Only a cynic would suspect something like that.
"Thank you very much for your recent letter regarding breastfeeding. I was very interested to read the pertinent points your letter raises. [but not so interested that I'd take the trouble to get your name right]."
"I find the arguments in favour of breastfeeding compelling." (there follows a paragraph about the benefits of breastfeeding).
"I would like to see a lot more done to promote breastfeeding but to my mind, legislation seems quite a big step to take and most importantly, could take years to pass through Parliament and still not get supported."
[Seems a marvellous cop-out for an MP, that. You could apply that to almost any bill -- 'Nah, it could take years to pass through Parliament and still not get supported, so I won't bother...']
"I think more could be done faster to achieve similar results through a voluntary code of practice." [because voluntary codes of practice have been such a roaring success, historically speaking]
"Such a code of practice could well include a requirement to establish adequate breastfeeding facilities in public places." [except (a) if it's voluntary then it presumably wouldn't be a requirement (unless I've been seriously misled on the definitions of either 'voluntary' or 'requirement') and (b) it's not about 'facilities' for breastfeeding. Am very tempted to reply and use Doesn'tChristmasDragOn's line that 'special facilities are not, in fact, required at all. All you require is a seat and, of course, a pair of breasts.']
"It would be far easier and significantly faster to get a voluntary code implemented than bringing new legislation through Parliament." [it would also be far less effective, but hey, what's that between friends such as you and I, Ms Ryan]
"Also, I wanted you to know that I'll be passing on your views to our Shadow Health Secretary, Andrew Lansley. As a party we'll be reviewing our health policy, so this is good timing for me to be able to forward your suggestions into that process and I very much hope they will be taken on board [huh? My suggestions were that you supported the relevant legislation. And a moment ago you thought that was a bad idea] as we have many young mothers in Putney, Roehampton and Southfields facing these day to day challenges.