Cavalry / Armoured Corps:

The Royal Scots Dragoon Guards

Infantry:

The Scots Guards - ScotsGuards.co.uk

The Royal Regiment of Scotland  RoyalRegimentOfScotland.org.uk :

The Royal Regiment of Scotland is an amalgamation of several old regiments, now reformed into the 7 Battalions below:

1. RSB (1 SCOTS) - 1st Battalion - The Royal Scots Borderers
2. RHF (2 SCOTS) - 2nd Battalion - The Royal Highland Fusiliers
3. BW (3 SCOTS) - 3rd Battalion - The Black Watch
4. HLDRS (4 SCOTS) - 4th Battalion - The Highlanders
5. ASH (5 SCOTS) - 5th Battalion - The Argyll and Sutherland Highlanders
6. 52nd Lowland (6 SCOTS) - 6th Battalion - 52nd Lowland - TA Reserve
7. 51st Highland (7 SCOTS) - 7th Battalion - 51st Highland - TA Reserve

Wikipedia.org - Regiments of Scotland

en.wikipedia.org/wiki/Military_of_Scotland

The British Army - Army.mod.uk

ScottishMilitaryHeritage.com