What are they? Here is my starter list.

Selfridges

http://www.selfridges.com/

Burberry

http://uk.burberry.com/

Marks and Spencer

http://www.marksandspencer.com/

Paul Smith
http://www.paulsmith.co.uk/

Duchamp
http://www.duchamplondon.com/

Cordings

http://www.cordings.co.uk/

Harrods

http://www.harrods.com/harrodsstore/

Liberty

http://www.liberty.co.uk/