| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | WO | UNKNOWN CODE | | | LW | will take place | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | M | Miscellaneous | | | / | | | Scope | A | Aerodrome information | | | W | Navigational Warning | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 999 | Unlimited | | | / | | | Centre Latitude | 5131N | 51° 31' North' | | Centre Longitude | 00009W | 0° 9' West | | Radius of area affected | 002 | 2 nautical miles |
| | LASER DISPLAY WITHIN 1NM RADIUS OF 513040N 0000909W ( GROSVENOR SQUARE,LONDON ). FOR INFO 07775 603335 / 07353 167346.AR-2026-9607 / 01. |
|
