The Beatles' Sir Paul McCartney is arm in arm with wife Nancy Shevell

Sir Paul McCartney was arm in arm with wife Nancy Shevell as they paid a visit to a north London fitness studio on Thursday morning.

The veteran former Beatles legend, 75, went some way towards proving that age is just a number by stepping out in jogging bottoms and trainers ahead of a workout with Nancy, 58. 

Staying warm beneath a tracksuit top and thick quilted coat, Sir Paul was in characteristically high spirits while strolling alongside his American wife.  

Time to Twist and Shout: Sir Paul McCartney was arm in arm with wife Nancy Shevell as they paid a visit to a north London fitness studio on Thursday morning 

Time to Twist and Shout: Sir Paul McCartney was arm in arm with wife Nancy Shevell as they paid a visit to a north London fitness studio on Thursday morning 

Joining her husband, Nancy looked ready for a workout in hooded top, blue leggings and trainers. 

Clutching a bottle of mineral water, the New York born businesswoman followed Sir Paul's lead by covering up in a thick winter coat.

The celebrated musician married Nancy on October 9, 2011, exchanging vows at London's Old Marylebone Town Hall register office - the venue for his first marriage to Linda Eastman 42-years earlier. 

Please Please Me: Staying warm beneath a tracksuit top and thick quilted coat, Sir Paul was in characteristically high spirits while strolling alongside his American wife

Please Please Me: Staying warm beneath a tracksuit top and thick quilted coat, Sir Paul was in characteristically high spirits while strolling alongside his American wife

Good Day Sunshine: The couple made the most of rising temperatures in the capital on Thursday morning 

Good Day Sunshine: The couple made the most of rising temperatures in the capital on Thursday morning 

Hello Goodbye: Sir Paul offered a genial wave as he made his way to the gym with Nancy on his arm

Hello Goodbye: Sir Paul offered a genial wave as he made his way to the gym with Nancy on his arm

Hello Goodbye: Sir Paul offered a genial wave as he made his way to the gym with Nancy on his arm 

And I Love Her: Sir Paul and Nancy were inseparable during their latest appearance in London on Thursday morning 

And I Love Her: Sir Paul

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