Pippa Middleton has reportedly split from Nico Jackson.

The 32-year-old socialite - who is the sister of Britain's Duchess Catherine - and her long-term boyfriend have ended their relationship after three years together.

A source told the Daily Mail newspaper: ''Pippa and Nico have parted ways. No third parties were involved.''

It has been claimed by People magazine Pippa and Nico, 37, decided to call time on their romance as the investment manager is now working in Switzerland and they have found it increasingly difficult to spend long periods of time together.

News of the split comes a week after the brunette beauty was pictured with former boyfriend James Matthews, who she dated briefly in 2012, leaving a house in west London.

Pippa was also seen with James, 40, when she and her brother James and mother Carole holidayed at the banker's parents' Eden Rock resort on St Bart's in August.

She also joined him in Sweden last month.

And also in September, Pippa was spotted having lunch with another old flame, banker Alex Loudon, in Fulham, west London.

The pair dated for three years before splitting in 2011.