Which NT property did you visit? And who was in your group?
I visited Wimpole Hall in Cambridgeshire with MrK our toddler and newborn
Were the whole family welcomed into the property?
Yes, the staff in the ticket office were very welcoming, talking to our toodler and giving her a sticker to wear which pleased her no end. They also advised us that there was a quiz for children in the house.
Were there age appropriate activities for your DCs?
Wimpole Hall has a working farm which is absolutely fantastic for children and the whole family to visit. There are plenty of animals to see, tractors to play on and guides to chat to. There are often events to go to as well. The cafe is also great, with good food and nice touches like the buckets of farm toys to play with and crayons to draw with.
We've been to the farm a few times - but didn't go on this occasion as it costs extra to visit, even if you are a NT member. The farm is also a good ten to fifteen minutes walk from the entrance, which was a bit much for me given I had a C-Section a few weeks ago. There are golf buggies available to take less-able visitors around, but I wasn't sure I'd be up to trudging round the farm.
Instead, we went to the house and around the gardens. The house is staffed by incredibly friendly volunteers who made us very welcome. They offered us the childrens' quiz but it did turn out to be for older ones - say five or six yo upwards. Something for younger children would be great, perhaps pictures of items in each of the rooms to look for?
On previous visits, small farm animal figures have been hidden in each room for children to look for (under beds, on top of cabinets and so on) and our DD was looking for them, but they weren't there this visit. One guide said that they may have been packed away as the house is closing for the winter soon. I hope they'll be there next time we visit as they're great fun, shown by DD remembering them.
The grounds around the house are beautiful and DD had great fun charging around and using up some energy while we watched 
If you needed to use the baby changing facilities, was it possible for either a Mum or a Dad to change their child in at least one of the bathrooms/ changing stations on-site?
We used the baby changing facilities in the stable block which were in a separate room so anyone could have used it. There was also a chair for breastfeeding which was good. We only had the sling, not the pram, but it would have fitted into the space easily. My only complaint is that the hot water was scaldingly hot as it came out of the tap.
The changing facilities in the Rectory cafe were in the disabled loo which I always think is a bit rubbish, as changing babies can take so long. I always worry that someone who really needs the loo will be held up by be stripping a baby after a poo explosion. A separate space would be good to have if possible.
Did you notice any breastfeeding friendly signs displayed around the property?
I didn't notice any signs but felt comfortable BF in the Rectory cafe and out on the terrace. Glasses and free water was available for all customers, good for BF mums as well.
Are there family friendly things the property could make more of?
The 'Things to do before you're 11 3/4' was very evident, with information in the ticket office and signs elsewhere. A nature trail around the grounds would be fun, based around the plants and planting perhaps? Quiz sheets and/or signs on the trees or around the paths would make the grounds more interesting for children. It could also make the trek over to the farm more interactive.
Do you have any suggestions for improvements?
The Hall doesn't allow prams and pushchairs inside (quite rightly) but you are asked to leave them outside the Hall while you take the tour. We had taken our sling with us as I'd seen the signs on a previous visit, but if you hadn't, and had an older, non-walking baby, it could be an issue. Clear information on the website would be good. Some form of buggy shelter with bike locks would also be welcome, rather than leaving what can be a very expensive piece of kit out in a place where people could just walk off with it.
A buggy park would also be useful at the Rectory cafe. There were a number of customers inside with older toddlers and their buggies which made it difficult to navigate around the tables. A place to leave them outside would be handy.
The childrens' lunchbox is a great idea, but less salty crisps would be welcome and white bread sandwiches would be welcome. The only bread available was granary which my toddler didn't like because of the 'bits'. Mini portions of the hot meals would also be a nice touch.
Overall what is your familys general impression of the NT offer for families?
Wimpole Estate is a great place for a family visit, mainly due to the farm, but it can still be fun to just visit the hall and grounds. There are a few things that could be done to make it more fun for younger children, but it still a great day out. I know that the NT wants to appeal to a wide age range, and that historic houses aren't really first on a toddler's list of interests, but a few tweaks would make it even more inviting than it already is.
We are already NT members as we holiday in the UK and like to be able to visit local historic sites. The family friendliness varies according to the nature of the site, but I often see events advertised that look great for families and which I would definitely consider when our children are older.
Thank you very much to you MN and the NT for our day out 