The St William of York Roman Catholic church in Stanmore is believed to be one of only a handful of buildings by Hector Corfiato in the UK.
Described as a 'rarely well-preserved' and 'particularly refined' example of its type, the church was also praised for its elegance and consistency of design - in particular the 'carefully crafted' detailing.
Culture minister David Lammy said: 'The church is a fine, robust, yet simple building and an outstanding example of creative design.
'Its elegance and carefully crafted detail merits protection as one of the few examples of Corfiato architecture in England today.'
In an earlier statement about the church on Du Cross Drive (see www.ajplus.co.uk, 12.01.06), the minister said 'it was rare to find a Roman Catholic Church retaining so many fine fittings and working so successfully and harmoniously as a single piece of creative design.'
Corfiato, who taught at the Bartlett in London and adhered to the Classical Beaux Arts tradition, designed the building in 1959.