England v South Africa

England captain Michael Vaughan tosses the coin but his South African counterpart Graeme Smith calls it correctly and opts to field Photograph: Scott Heavey/Action Images

Members of the MCC enjoy the sunshine - and the best views in the ground Photograph: Mike Hewitt/Getty

England make a confident start at Lord's with Andrew Strauss coping easily with Dale Steyn's pace Photograph: Sean Dempsey/PA

South Africa's decision to put England in looks to have backfired as Alistair Cook makes his 11th test 50. England are 82 without loss in the 33rd over Photograph: Gareth Copley/PA

Morne Morkel celebrates making the breakthrough: Andrew Strauss is caught lbw on 44 Photograph: Tony Marshall/Empics

Michael Vaughan is clean bowled for 2 by Steyn in the very next over Photograph: Scott Heavey/Action Images

A fired-up Dale Steyn celebrates taking Vaughan's wicket Photograph: Tom Shaw/Getty

Alistair Cook survives this appeal from Makhaya Ntini but he is caught out soon after when he flaps at a ball from Morkel Photograph: Adrian Dennis/AFP

Pietersen runs back to the crease as South Africa's Hashim Amla misfields the ball in front of the stumps Photograph: Adrian Dennis/AFP

Pietersen is hit by a delivery from Dale Steyn as a fascinating tussle develops between the two men Photograph: Tom Shaw/Getty

Pietersen deals with everything the South Africans throw at him, racing to 50 in a 100 partnership with Ian Bell Photograph: Gareth Copley/PA

Pietersen fends off yet another fierce Steyn ball Photograph: Tom Hevezi/AP

Pietersen reaches his 100 as England completely dominate the afternoon session Photograph: Paul Childs/Action Images