Things In Our Loft!!!

I had to go into the loft to do some repairs and renew the mouse treats and spotted these:-

I guess this used to be a wasp nest.


I haven't the faintest what these might be . Any ideas?
Thanks in advance.

They look old and, possibly, empty. About 2" across




This doesn't have a hole in it so I guess it may be occupied. It's about 3" across. I don't want to harm it if it isn't harbouring something bad for us.



To give an idea about size


and colour

 

Are the little ones wasp nests as well? They're only tiny compared to the main one - which I recognise as a wasp nest. They're between two and three inches across and look complete.

 

What puzzles me is that the third small one doesn't appear to have a hole in it.

 

We usually get wasps nesting in our loft each year so that's definitely what you have. The entrance hole will be at the top and they probably get in through a gap in the tiles straight into the nest.

The nest is highly flammable so take care, inside the bigger ones will be the honeycomb with hopefully dead larvae.

 

But isn't that more fattening?

 

I can see that the big one has fallen apart and two of the smaller ones look empty but I can't tell whether the one where I can't see a hole is occupied or not. I don't want to disturb it and then have any angry wasps chasing me around the loft


The job I was doing in the loft was taping up the bitumenised roofing felt where it was split. There were some quite big tears in it so I used Gorilla tape. There are some more in other parts of the loft but not as big. So I'll have to get round to doing them.