A chorus of women and girls of all generations shouted the words "Time's Up" outside Downing Street, the epicentre of UK government.

Through the rain, sleet and, snow, thousands gathered next to the UK's corridors of power to mark the one-year anniversary of the Women's March in London.

SEE ALSO: All the best signs from round 2 of the Women's March

This year, the march takes its inspiration from the #Time'sUp movement, launched earlier this month by over 300 women in Hollywood to fight systemic sexual harassment across all industries.

Just like last year, demonstrators brandished homemade signs with powerful and witty messages. Here are the fiercest signs spotted at the rally.

"Same shit, different century," read one wielded by 21st century suffragettes.

Credit: Chris J Ratcliffe/Getty Images

"No longer accepting the things I cannot change, but... changing the things I cannot accept."

Credit: rachel thompson / mashable

Christina Aguilera made a cameo appearance at the rally.

Credit: Chris J Ratcliffe/Getty Images

Of course, it wouldn't be a London rally without a Harry Potter-inspired sign. "Without Hermione, Harry would have died in book one."

Credit: rachel thompson / mashable

"To womb it may concern."

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Credit: rachel thompson / mashable

Children held some of the best signs at the march.

"Donald Trump, go to prison now," declared this little girl's homemade sign.

Credit: rachel thompson / mashable

"Boys will be good humans."

"Little girls with dreams become women with vision," reads this sign held by 5-year-old Orla.

Credit: Getty Images

"Girls with power."

Credit: rachel thompson / mashable

"I march for little girls with big dreams."

Credit: Chris J Ratcliffe/Getty Images

"Not yours, never was."

Credit: Chris J Ratcliffe/Getty Images

Dogs were also out in force at the rally.

Credit: Chris J Ratcliffe/Getty Images

Elsie the dog even had her own sign.

Credit: Chris J Ratcliffe/Getty Images

This sausage roll-themed sign is so gloriously British.

"Time is up on rape culture."

Credit: Chris J Ratcliffe/Getty Images

Here's to the feminist killjoys making history this weekend.

Time's up, folks.

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