Little Grebe nesting success at Chatsworth

I've seen one, and sometimes two Little Grebes regularly at Chatsworth and suspected they might be breeding although it felt like it was getting a little late in the season. Today I struck lucky though and managed a photo of an adult with two tiny youngsters.
Locally the Little Grebe is a very scarce breeding bird, the only other pair I've come across in the summer is at Conksbury Bridge but there are usually a few more around on the rivers during the winter months.

Little Grebe with chicks