The stars, who first became pals during lockdown after meeting each other in a vaccine centre, appeared on DNA Journey and went on an adventure to uncover their histories.
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Meanwhile, Hugh shared a similar snap and wrote: My turn to ask for a selfie. @nobleandstace and I had to up our Welcome game when the one and only @johnbish100 arrived for his vaccination #MidhurstPharmacy #vaccination.
Hugh was sporting a yellow hi-vis jacket and a face mask, which he pulled down for the photo opportunity with John - who was stood at a social distance.
Let me take a selfie: The two stars shared selfies on their respective social media accounts after the surprise encounter at the Midhurst Pharmacy vaccine location
The Downton star offered a thumbs up for the camera in John s snap, as they both smiled for the snap.