Frank is listed as being killed in action on 27 Sep 1918. The war diary for that day is transcribed below along with an obitury from the Stratford on Avon Herald.
War Diary
Willerval Sector 26th Sep 1918: Capt W. Evans, MC joined Battalion. 2/Lieut P.A. Gaster joined Battalion. Lt A.C. Pearse MC rendered valuable service in laying the tape lines, and assisting assaulting Companies on to their assembly positions. The attack commenced at midnight.
Willerval Sector 27th Sep 1918: All objectives were gained, and some prisoners together with 5 enemy machine guns were captured. D Company suffered rather heavily from the enemy's barrage but succeeded in killing a large number of Germans with their rifles and bayonets. Capt A.H. Mackay commanding D Company greatly distinguished himself. By their magnificient fight the Battalion added yet more to the glorious traditions of the 77th.
Casualties: 2/Lieut H.C. Chinn; 2/Lieut R.S. Badcock wounded. 2/Lieut J. Green killed. 11 O.R killed in ac, 16 O.R missing, unaccounted for. About 38 O.R wounded.
Lieut Col E.E.F Baker MC returned from leave. END
Newspaper Obituary
Stratford on Avon Herald - 15 November 1918
TIDDINGTON SOLDIER KILLED
Official notification has been received by Mr & Mrs George Knight, New Street, Tiddington, of the death in action on September 27th of their son Private Frank Wells Knight, 2nd Battalion Middlesex Regiment.
The deceased soldier had served in France for about 18 months and had just returned to that front after spending a short home leave, when he met his death. He was 32 years of age.