The front block was added in the early 19th century, a common practice at that time.

The main block was probably added around this time.

During 1951 - 1960, a block of flats was added to the complex.

In 1906, another block was added for a children's playground.

These blocks could be added, moved, or removed as needed.

The Georgian main block was added to it around the turn of the 19th century.

Another new block was added in 1972 and further buildings were taken into use in 1978.

The new block was added to the existing building in August 2010.

Later, an experimental block was added to the north of the factory.

A few blocks were added later owing to the increase in the number of students being enrolled.