Headgear of the 32 Signal Regiment - Glengarry, Tam O'Shanter, or Beret?

[Reid10]

I am in the process of cataloguing my 32 Signal Regiment headgear and could use expertise from the forum to ensure I am labeling everything correctly.

I know the regiment wears (has worn?) three types of headgear; the glengarry, tam o'shanter, and blue beret with a Red Grant tartan square (glengarry) or diamond (TOS and beret) as a badge backing. The right to wear the Red Grant tartan was granted in 1967.

Here is where I am confused and would appreciate your insight.

There is one squadron, 40 (North Irish Horse) Signal Squadron, in Belfast with all other units based in Scotland.

Does the regiment continue to wear the blue beret? Is it only worn by the squadron in Northern Ireland? Does the Irish squadron also wear the glengarry, or do they wear a peaked cap?

If the blue beret is no longer worn, in what year to did this occur? 2009?

When did the regiment begin wearing the TOS? I know it was only in 2009 that the Scottish Transport Regiment requested, and was granted, the right to wear the TOS.

Below are pictures of all three types of Other Ranks headgear. The glengarry for Staff Sergeants and above has a blue toorie and Pipers and Officers have their own distinct cap badges.

I look forward to having this mystery (at least for me) cleared up.

Reid