A site plan of the shiny-new BRENT CROSS CENTRE. It encompassed 799,900 lettable square feet and seventy-five shops. The parking area accommodated 3,500 autos. The mall's Upper Ground Floor (or second level) is depicted in this drawing. 

A vintage view of the Central Court, fountain and water garden. The dome overhead was decorated with coloured glass inserts. It was sealed from the outside, with no windows. In fact, the original mall had little -if any- natural lighting. 
Photo from Brent Cross Centre_https://www.vice.com / Vice Media Group

Another vintage view of Central Court. The Marks & Spencer mall entry is seen on the second level.

Photo from Brent Cross Centre_https://www.vice.com / Vice Media Group

Here, we see the first and second level Fenwick mall entrances.  

Photo from Brent Cross Centre_https://www.vice.com / Vice Media Group

A Waitrose supermarket occupies second level space, with the grocery being adjacent to the rear side of the Fenwick department store. The original Waitrose court -seen here- included a children's play area

Photo from Brent Cross Centre_https://www.vice.com / Vice Media Group