Looking at Radio Times for the main Freeview Channels (BBC1&2, ITV, Channels 4 & 5, for the period between 23 - 27 December, plus 1 January, we find the following often-shown films - many likely to have been shown at Christmas and/or Easter:
The Big Sleep
Casablanca
Paddington
It's A Wonderful Life
Die Hard
The Dirty Dozen
The Sound of Music
White Christmas
Home Alone (1 and 2)
Chariots of Fire
The Italian Job
Forrest Gump
West Side Story
The Wizard of Oz
Chitty Chitty Bang Bang
The Great Escape
Raiders of the Lost Ark
The Dam Busters
Where Eagles Dare
Meet The Fockers
The Heroes of Telemark
Seven Brides for Seven Brothers.
For A Few Dollars More
High Society
Plus numerous others on other channels (free or subscription), and other days not listed above.