Early morning commuters and joggers where accompanied this morning by a polar bear. This 8ft long, fully animated ‘adult male polar bear’ was seen casually strolling through the capital to mark the launch of Sky Atlantic’s hotly anticipated arctic crime drama ‘Fortitude’.

The highly sophisticated prop uses internal monitors linked to hidden cameras, allowing the two performers (The puppeteers of ‘Joey’ in West End production of War Horse)  to see making it possible to react to a passerby.