Tom Hiddleston PICTURE EXCLUSIVE: Rugged actor goes low-key with mystery ...

He is one of 's biggest heartthrobs.

Yet Tom Hiddleston swapped the debonair style that put him in the bookies' running for James Bond for a more rugged look as he was spotted enjoying a low-key dog walk in London alongside a stunning mystery brunette on Wednesday.

The 37-year-old Thor star was sporting a crisp black pea coat with a crew-neck jumper while his pal was sporting a bold orange jumper with a denim jacket while also holding on to the dog's lead for the low-key jaunt.

Happy days: Tom Hiddleston swapped the debonair style that put him in the bookies' running for James Bond for a more rugged look as he was spotted enjoying a low-key dog walk in London alongside a stunning mystery brunette on Wednesday

Happy days: Tom Hiddleston swapped the debonair style that put him in the bookies' running for James Bond for a more rugged look as he was spotted enjoying a low-key dog walk in London alongside a stunning mystery brunette on Wednesday

Tom looked handsome as he headed down the street in his low-key yet undoubtedly designer ensemble while sashaying along with the mystery woman. 

His crew-neck jumper was perfect to protect him from the descending autumnal chill while he took no chances by also rocking his pea coat. 

He opted for straight leg jeans and a pair of smart shoes, making for the perfect low-key yet stylish look for a dog walk and coffee run.

His brunette companion was equally stylish as she jaunted around in a light wash denim jacket while adding a splash of colour with her orange jumper.

Having a laugh: The 37-year-old Thor star was sporting a crisp black pea coat with a crew-neck jumper while his pal was sporting a bold orange jumper with a denim jacket while also holding on to the dog's lead for the low-key jaunt

Having a laugh: The 37-year-old Thor star was sporting a crisp black pea coat with a

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