[1] She later reported that this taught her that quiet campaigning was not going to be sufficient and she joined the more radical Women's Social & Political Union in 1907 and established a Glasgow branch of the WSPU.

As part of another delegation in June 1908, with Emmeline Pankhurst, twelve women including Emmeline Pethick-Lawrence, Jessie Stephenson, Florence Haig, Maud Joachim and Phillips were turned away from an arranged visit to the Prime Minister on 30 June 1908 and a crowd of supporters tried to rush through a police line who responded with physical force,[4] resulting in a further arrest and 3-month sentence, making Phillips the longest serving suffragette prisoner.

When Phillips was released from prison she was welcomed by Flora Drummond, bagpipes and other suffragettes who posed in tartan [3] for a picture under the slogan "Ye Mauna Tramp on the Scotch Thistle Laddie".

[3] She was among the welcoming party for another released prisoner Emmeline Pethick-Lawrence, in April 1909, with the Pankhursts, two Kenney sisters, Vera Wentworth, Minnie Baldock and Mary Gawthorpe.

[4] Phillips was arrested later in 1909 again with Vera Wentworth and Elsie Howie for attempting to force their attendance at a men's meeting in Exeter where Lord Carrington in charge of the Agriculture and Fisheries Board was speaking.

"[3] Phillips also carried out what Christabel Pankhurst called a 'splendid protest' showing ' pluck and ingenuity' by hiding under the stage overnight, jumping out shouting 'Votes for Women' and objecting to Patricia Woodlock's imprisonment when two Cabinet Ministers were being awarded honorary degrees in Liverpool St George's Hall.

Significant visitors were asked to plant a tree (in Phiilips case a Picea Pungens Glauca)[3] to record their achievements on behalf of the cause e.g. a prison sentence.

Posterity will know how to judge the Government if it persists in bringing about the falsification of national statistics instead of acting on its own principles and making itself truly representational of the people" on the form for the WSPU’s office.

"[4] But on 9 July 1913 she was sacked by Christabel Pankhurst who wrote saying "that you are not effective as a district organiser";[4] this may have been due to Phillips no longer strongly favouring militancy.