DAVID AND SAMANTHA CAMERON PHOTO

It has been a week of tough political
battles with fellow G20 leaders that has seen the Prime Minister launch
more than one staunch defence of his 'small island'.

But David Cameron was given some respite this afternoon as he and Samantha attended her half-sister's country wedding.

Fresh
from the G20 summit in St Petersburg, Mr Cameron was seen taking
pictures on his mobile phone outside Sutton-on-the-Forest Parish Church
near York following Alice Sheffield's wedding to Etienne Cadestin.

Break from politics: David Cameron, pictured
(left) arriving at the ceremony with his wife Samantha, looked relaxed
as he took photos on his mobile phone

Congratulations: Mr
Cameron applauds following the wedding of his wife's half-sister Alice
Sheffield to Etienne Cadestin at Sutton On Forest Parish Church near
York

The happy couple: Alice Sheffield and her husband Etienne Cadestin pose for pictures following the ceremony

The Prime Minister wore a
dark coloured suit with a blue tie and what appeared to be a cream
buttonhole as he arrived arm in arm with wife Samantha.

She was pictured smiling in a pale pink fitted dress with a floral pattern.

Ms
Sheffield once worked for Mr Cameron as a correspondence secretary and
is the founder of green cosmetics website Bare Faced Cheek.

Respite: Mr Cameron looked happy and relaxed following a stressful week at the G20 summit

Snapshot: The Prime Minister takes pictures on his mobile phone following the ceremony

Say cheese: Mr Cameron tries to get the perfect shot of the happy couple

Her new husband, Mr Cadestin, is a senior sustainability and energy consultant for estate agents Knight Frank.

Mrs Cameron and her half sister are the daughters of baronet Sir Reginald Sheffield.

The wedding meant that Mr Cameron was unable to attend the Highland Games at Balmoral.

Traditionally
the Prime Minister spends a weekend with the Queen and Duke of
Edinburgh in September and it often coincides with the Braemar
Gathering.

But Mr Cameron will instead visit the Queen's retreat later this month.