I agree with kanga - I'd be looking at the parking very closely.
House #1 - looks like next door has to drive past the house, between the house and the canal, to get to their house? Check how many cars you could park on the drive including turning space required to get back out. There doesn't seem to be anywhere for visitors to park, and if next door have surplus cars/visitors and park on the drive they could block you in. Difficult to tell from photos, but from the map view, looks like you'd have space for two cars only (not in garage) whereas next door, being at the end, could fit four cars on their drive (not in garage). They may have only 1, but if there were indeed four, having to drive past your house to get in and out every day, it might start to bother you. Check who has responsibility for the drive, too.
It also looks to me like the entrance to your drive is begging to be used as a turning point for cars wanting to get back out of the road. It would really annoy me to have a stream of cars/delivery vans reversing in front of my sitting room window (or whatever room that is) into the drive entrance. I also don't like the chunk of garden lost to somebody else's garage since legally you can't do much with their walls eg can't grow climbers up, without permission. if you look on google map view, over half the garden is in shade - and it's the half nearest the house. If you want to sit in sun, you'd need to sit right up against that neighbour's garage.
As for house #2, is that an unadopted road? Looks like it could be. Check maintenance costs and agreements VERY carefully! We live in a private road and luckily get on with the neighbours, but... repairs are flipping expensive! Again, check out parking. With the number of DC and their ages, you need to be prepared for not just them to be driving, but their friends...
Good luck!