In 2014 following the 2013 Future Army Reserves announcement, the regiment was re-formed within the new Scottish and North Irish Yeomanry.

[5] In 1908, the regiment was transferred to the Territorial Force (TF) and named The Lothians and Border Horse (Dragoons).

[10][11] In the Summer of 1915, the 1/1st was split up as follows:[10] On 11 May 1917, A and D Squadrons formed the XII Corps Cavalry Regiment at Salonika, where they remained until the end of the war.

Following the experience of the war, it was decided that only the fourteen most senior yeomanry regiments would be retained as horsed cavalry,[20] with the rest being transferred to other roles.

[3] By 1939, it had become clear that a new European war was likely to break out, and the doubling of the Territorial Army was authorised, with each unit forming a duplicate.

[24] The 1st Regiment of Lothians and Border Yeomanry was part of the 51st Highland Division, which had been sent to reinforce the French Maginot Line and was serving there when the Germans started their offensive.

Outnumbered, it fought a retreat of sixty miles in six days to the fishing port of St. Valery-en-Caux, where, having run out of food, ammunition and other supplies, they surrendered on 12 June.

[28] On 30 May 1940, the regiment was assigned to the newly formed 1st Motor Machine Gun Brigade, as an interim move due to the shortage of Tanks after the retreat from Dunkirk.

[36] Prior to 1914 the Lothians and Border Horse wore a full dress review order consisting of a silver dragoon style helmet with white plume, a scarlet tunic with dark blue facings, and dark blue "overalls" (cavalry breeches) with double scarlet stripes.

[37] On assuming the role of divisional cavalry in 1939, the 1st Lothians lost the privilege of wearing the cloth tank insignia.

[38] The reformed 1st Lothians chose the much greener shade of blanco for webbing equipment and collar badges were also issued to all ranks.

Sleeve badges made a reappearance, worn on the chevrons (rather than above as in earlier times) by corporals and sergeants as an 'optional' extra.

French-grey cloth shoulder titles, bearing 'LOTHIANS & BORDER YEOMANRY' in yellow lettering further distinguished the unit for a short period after it was reformed.

[38] The 2nd Lothians also adopted the French grey shoulder titles, in this case bearing 'LOTHIANS & BORDER HORSE'; but nothing else, apart from the divisional sign of the 6th Armoured Division, a mailed fist on a black background, was used to embellish the battle-dress blouse.

A number of officers also wore a French grey field service cap, edged with gold piping on off-duty occasions.

[38] Battledress features show little change from their wartime originals, except that other ranks were now permitted to wear collar and tie on off-duty periods.

The practice of wearing regimental sleeve badges with rank insignia adopted by the 1st Lothians corporals and above in the early 1940s was discontinued.

1 Dress had altered considerably and illustrated, in the case of other ranks, both the horsed and mechanized eras of the regiment's history.

In the case of officers, the black beret was displaced by a peaked forage cap, similar in appearance to that worn around the start of the 20th century.