Seamstress/ Sewing Machinist in London

I am looking for a Seamstress/machinist to do a small on-going production using their own machines. I would like the person who takes on the job to be based in London, SE London would be preferable.

I will be requiring someone to sew women’s Christmas dresses with hats, I will provide the cut piece and send it to you to sew.

I am hoping to find someone I can build up a long term working relationship with, someone who is reliable and can stick to deadlines.

And if so, where approximately in London are you based?