The forward joins the Magpies for an undisclosed fee after scoring 13 times in 66 appearances in North London.

Martha spent the second half of last season on loan at Liverpool, and prior to her move to Spurs, spent two seasons with Manchester United.

After going through the US collegiate system with Charlotte 49ers, the 30-year-old joined Le Havre, before moving to England to play for West Ham United, scoring 10 goals in 33 games.

The Scotland international has scored 21 goals in 52 appearances for her country.

Martha said: “I'm really excited, it’s a really big club to be able to play for and I just can't wait to get started. I want to compete and play for the best teams.

“Team culture is really important to me and I think I bring some good attributes on that to help the team in the dressing room and push standards on the pitch.”

Manager, Tanya Oxtoby, said: “Martha is a proven striker both in the WSL and internationally, so we are looking forward to welcoming her into the group.

“She is a physical striker and adds outstanding work rate to the squad. She has shown that she has the ability to score all kinds of goals, while also having the link and create the play too.”