'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Bjorn Ulvaeus

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Bjorn Ulvaeus

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Bjorn Ulvaeus

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Bjorn Ulvaeus

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Siobhán McCarthy

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Judy Craymer

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Judy Craymer

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Catherine Johnson, Judy Craymer and Bjorn Ulvaeus

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Judy Craymer, Bjorn Ulvaeus and Catherine Johnson

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Judy Craymer and Bjorn Ulvaeus

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Bjorn Ulvaeus with cast members of Mamma Mia

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Bjorn Ulvaeus

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Bjorn Ulvaeus with cast members of Mamma Mia

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Stevie Doc and original cast member Lisa Stokke

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Judy Craymer and Catherine Johnson

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: Judy Craymer

'Mamma Mia', as the West End show celebrates a quarter of a century, on the...

• People: The cast of Mamma Mia