This might be rambling but I'll try to be concise
If your employer usually provides you with a uniform but requires you to wear other clothing for a role which will only be performed on an adhoc basis, are you able to claim anything back?
Uniform is standard for all employees: boots, trousers, top, jacket and specialist equipment.
Line management put staff member on a training course which requires business dress and smart casual with strict requirements.
Suit: must be very dark grey or very dark navy must not be black
Shoes: must be black dress lace shoes and must be soft soled.
Trouser must be chino style: stone, light grey or navy
Shirts: must be long sleeved and must have button down collar this includes the casual shirts. No logos permitted on any clothing including jackets, boots.
Belts must be black with silver hardware.
Also must have brown boots to wear with chinos, a blazer and numerous ties.
All this must be purchased prior to the training course and worn during the training so cannot be returned if they fail the training course.