The woman, known only as Mrs S, won the money after matching the five main numbers in the Set For Life draw on Thursday, February 20.
She now plans to use the money for home improvements.
The lucky Lewisham lady, who played a personal selection of random numbers via the National Lottery website, has become one of more than nine million players that win each week on the National Lottery’s range of games.
Interactive winners have the opportunity to release their name, remain anonymous or, like this winner, release some details through partial publicity.
Andy Carter, senior winners’ advisor at Allwyn, operator of the National Lottery, said: “Amazing.
“What wonderful news for Mrs S who has won £10k every month for an entire year.
“We hope she enjoys making her home improvements with her extra money in the bank each month.
“Huge congratulations.”
Players can buy tickets in retail outlets, play online at national-lottery.co.uk or by downloading the National Lottery app.
Playing online via the website or app means that your ticket is automatically checked, and you get an email notification if you win a prize.
You can also scan your retail tickets on the National Lottery app to check if you’re a winner.
Whether you play using your own personal selection of numbers, like Mrs S, or prefer to use a Lucky Dip, national-lottery.co.uk makes playing simple and easy.
By setting up an online National Lottery Direct Debit you can guarantee that you never miss out with the added bonus of having no ticket to worry about or numbers to check.
At national-lottery.co.uk, players can buy tickets for all of the National Lottery’s draw-based games including Set For Life, Lotto, EuroMillions and Thunderball.
Once they have registered and set up an account, they can also play a range of online Instant Win Games.
Set For Life is a draw-based game from the National Lottery.
You pick five main numbers from 1 to 47, and one ‘Life Ball’ from 1 to 10, for the chance to win fixed prizes – with everything from the top prize of £10,000 a month for 30 years, to the second prize of £10,000 a month for one year and £5 for matching just two main numbers.
The Set For Life game costs £1.50 per line and is drawn every Monday and Thursday.
Set For Life has also just launched an annuity Scratchcard, in addition to the draw-based game.
Available in stores now, the new ‘Set For 5 Years’ Scratchcard costs £2 and offers players the chance to win a top prize of £5,000 every month for five years.