http://virtuosohotels.blogspot.com/2...r-upgrade.html
confirmed 2 category upgrade at lanesborough

£255 deluxe > £575 junior
£415 exec > £675 exec junior
£575 junior > £1100 aspley
£675 exec junior > £1800 grosvenor (http://www.flyertalk.com/forum/10976248-post90.html)
£1100 aspley > £2350 buckingham
£1800 grosvenor > £7500 3BR royal

also just noticed http://www.lanesborough.com/