A former Live Nation executive based in the UK was given a 20-month suspended sentence on Friday after being arrested by London cops last year for shooting video up the skirts of women riding the train.

An ­investigation found nearly 50,000 images.

Live Nation fired the exec, Andrew Macrae, after he was arrested by an off-duty police officer who noticed a pen-shaped device protruding from a laptop bag he had placed between the legs of a woman seated on a train platform.

When confronted by the officer, Macrae, 43, admitted the device was a camera.

The July 19 admission led to a search of the married father’s home, where authorities found a hard drive with images dating back to 2013.

In addition to strangers, Macrae had filmed friends visiting his wife through a camera hidden in the guest bedroom. He also filmed through the window of a neighbor as she was getting a wax treatment.

Macrae, who admitted to being “disgusted” with himself, pleaded guilty to seven counts of voyeurism for the purposes of sexual gratification and a count of outraging public decency before his sentencing. ­

The court also ordered Macrae to pay ­$140 ­to a victim and ­place himself on the sexual register for 10 years.