Millions Like Us

I believe the seaside pier featured on your "Millions Like Us" page is at Eastbourne.

Compare your image with that given at:
Eastbourne Pier
Although reversed, the images look awfully similar!
I also think the seafront scene, with the overhanging hotel canopy, is at Eastbourne.
Compare your photo with:
Seafront_02
Again, although the images are reversed, the buildings look very similar.
So, presumably the town featured in the film is Eastbourne!

The following shows an image of the Eastbourne seafront and pier
Seafront_01>
I believe the building with the canopy is (now) known as the Cavendish Hotel and is located on the corner of Grand Parade and Devonshire Place, close to the pier.

A closeup of the hotel is shown in :
hotel

Regards
Geoff