I have forgotten where the White Cube is in Bermondsey and my friends turn right before I realise we are there. The courtyard outside is deceptively empty and we are immediately hit by crowds as we enter the gallery to see Jeff Wall’s exhibition, A Life in Pictures, celebrating 30 years of collaboration between artist and gallery. Born in 1946, Jeff Wall is best known for his backlit transparencies which he started making in 1978, referencing cinema, classical paintings and l