43 RTR was stationed at Welbeck Abbey, where it provided training courses for the other battalions in the brigade: 144th and 148th Regiments Royal Armoured Corps.

In November 1942, 43 RTR formed a special squadron ('X' Sqn) equipped with modified Churchills, to take part in Exercise Trent II, testing the practicalities of disembarking from Landing Craft Tank LCTs on Pendine Sands on the South Wales coast.

43 RTR was made responsible for training Armoured Assault Regiments of the Royal Engineers (RE) on Matilda and Valentine tanks.

[17] More advanced vehicles arrived as time went on: Churchill Crocodile flamethrowers; Valentine Scorpion and Sherman Crab flail tanks; Canal Defence Lights; Snake Mine-clearing line charges etc.

By the end of 1943, the joint RE/RAC assault training wing disappeared, and 43 RTR was organised as a 'breaching team', to demonstrate using all these specialised vehicles in tactical combination.

[19][20] In January 1945, 43 RTR was told that it was to re-train in the Canal Defence Light (CDL) role for deployment to South East Asia Command.

In the early part of 1945, the regiment was stationed at Lowther Castle, near Penrith, the CDL training centre.