[QuantumLeap]

Is this is a list of options from which we are to choose, or is this your top 10?

If the latter, I really hope by "courthouse" you mean the old courthouse, not the new one. The new(er) one is perhaps the ugliest building in London, and certainly its most visible abomination.

Also, what do you mean by favourite? Best-looking? Inside and outside or only inside?

Here's my top buildings (in no particular order) best-looking from the outside
St. Paul's old Rectory (Richmond and Dufferin)
Dominion Public Bldg
London Life
201 Queens (Clarence and Queens) - this one is contentious, I know
Middlesex College
Labatt Arts Pavilion
Wellington Street Red-brick Apartments
Delta Armouries (New and old parts together)
"Italianate Row" - buildings on East side of Richmond between King and York
new Manufacturing Centre at Fanshawe
Talbot Centre (except I HATE the mall inside - I really wish they had made the businesses face onto Fullarton)
Old Courthouse
St. Peter's Cathedral
110? Cherryhill (the tall one) - also contentious, I know


Some of the Ugliest Buildings in London:
Social Science Centre @ UWO
New Courthouse
Drewlo Apartments on Dundas
White Oaks Mall
University Hospital
Centennial House Apartments