REMOVE

1. Architecture -- 1900-2000
2. Public buildings

WHAT

1. Architecture -- England - … (6)
2. Civic centres (3)
3. Offices -- England -- Lon … (3)

WHERE

1. ENGLAND, UK (7)
2. Hillingdon, London (3)
3. London (3)
4. Cardiff, South Glamorgan (1)
5. Chester-le-Street, Co. Du … (1)

WHO

1. JOHNSON-MARSHALL, Stirrat (3)
2. MATTHEW, Robert Hogg (3)
3. ROBERT MATTHEW JOHNSON-MA … (3)
4. WHITFIELD, William (2)
5. PNIEWSKI, Bohdan (1)

WHEN

1. 1978 (3)
2. 1972 (2)
3. 1926 (1)
4. 1960 (1)
5. 1980 (1)