Looks like a horse chestnut......

[Orchardman]

...but those aren't conkers. Ideas please.

[5thelement]

Looks like one of the many Horsechestnut cultivars, probably with sterile seeds. 
Look up Aesculus Indica for a starter. 👍

Edited August 31, 2024 by 5thelement

[Orchardman]

6 minutes ago, 5thelement said:

Looks like a Horsechestnut hybrid. 

That did occur to me but with what? The "fruits" are segmented with several chambers which hold small dark brown seeds. 

[peds]

How segmented?  My conker tree has 2 or 3 nuts per husk... 

(I think... ask again in another month or so...)

 

Could we get a fruit dissection photo?

Edited August 31, 2024 by peds

[Orchardman]

Will do

 Thanks.

[Orchardman]

10p coin for scale. So very small fruit compared to conker. They are ripe now and beginning to fall

 Most are 3 chambered and none with spikes 

 

 

[Doug Tait]

I'll guess at Indian Horse Chestnut too.

 

18 hours ago, 5thelement said:

Aesculus Indica

 

 

Indian Horse Chestnut? https://arbtalk.co.uk/forums/topic/133813-indian-horse-chestnut/

Edited September 1, 2024 by Doug Tait
Old thread link

[Max Wright]

Is it a Yellow Buckeye?