NCT also does feeding bras for later on, if you're worried about that. They go up to truly large sizes that you didn't even know existed . They have peeople to do fittings, try their website NCT
Would also recommend Bravissimo as below. Think they do a couple of soft ones. I'm big normally (32H) and am currently 34 wks pg and have been bad girl and not bought any soft bras. Now I'm down to 2 saggy old underwires that are the only ones I can wear with comfort. Oh, and I've never worn a bra a night, so cant comment on that. HTH
I'm normally a 34F - now 36G at 21 weeks so I can sympathise. I've cheated and am still in underwires, so can't help you there.
But I have found this great Topshop top to sleep in - it's got one of those 'secret support' bands in them, and the 16 fits me fine. I can't link to it on the website, but if you look on topshop.co.uk under maternity and then extras, it's the short grey top. I now have two, in rotation.
Have you tried M&S i know that in our big one they have hundreds of bras and maternity and can order them in most sizes to any store. I got two 38 DD's ordered one black one white, nothing special but cotton and comfy for £25.
They fit wonderfully- for now and will def go back to them to get more once I 'grow' again.
have you looked at leadinglady.com? they have some great stuff. we're trying to get pregnant right now and i have some friends who used their nursing bras and sleep bras and loved them. i'm definitely going to get some and try them when i'll need them (hopefully we'll get the little plus sign soon!)