Grimsdell is a co-educational Pre-Preparatory School in the green belt of North West London and a full member of the Independent Association of Preparatory Schools (IAPS).

The school aims to provide a happy, secure and rich learning environment for children aged 3 to 7. We have a highly qualified team of staff who fill the children's day with a wealth of activities, encouraging each to develop their individual talents and abilities.

We believe in developing each child at his or her own pace, while at the same time expecting high standards in preparation for their next step within the Mill Hill School Foundation or elsewhere.

We offer small classes and a high teacher/pupil ratio as well as specialist teaching in Music, PE and French. Our delightful classrooms are spacious and well resourced. Our two play areas provide challenge and adventure as well as quiet areas for drawing and reading.

Purple Mash

Purple Mash includes creative tools, programs and educational games that Grimsdell children can access online, both at school and at home.


On Tuesday 14th June, Year 2 participated in the annual Grimsdell Swimming Gala. MORE…


Year 1 went to Hatfield Forest, in Essex. MORE…


This week Year 1 were visited by a Road Safety Officer who explained the importance of keeping safe on the road. MORE…


The children enjoyed a visit from Science enthusiast, Ted Casey, this week. MORE…

Come and explore the world of Grimsdell Mill Hill Pre-Preparatory School in this introductory film which will give you an insight into life here, our values and opportunities.