| Code | Definition |
| AT | Automatic Trade, order book trade in a regular trading session. |
| BC | Cancellation of OTC trade after date of publication. |
| BF | Inter-fund cross with delayed publication requested. |
| BK | OTC Trade with delayed publication requested. |
| BT | OTC trade. |
| CC | Cancellation of OTC trade after date of publication. |
| CF | Inter-fund cross with delayed publication requested. |
| CK | OTC trade with delayed publication requested. |
| CT | OTC trade. |
| GC | Cancellation of GILT & UKGT segment trades after date of submission. |
| IF | Inter-fund transfer with delayed publication. |
| LC | Cancellation of an on exchange trade after date of publication. |
| LT | Late Trade - when a trade is reported to the Stock Exchange some time after it has been executed it is known as a Late Trade. |
| MC | Cancellation of OTC trade after date of publication. |
| MF | Inter-fund cross with delayed publication requested. |
| MK | OTC trade with delayed publication requested. |
| MT | Inter-fund cross with delayed publication requested. |
| NK | Negotiated trade with delayed publication. |
| NT | Negotiated trade with immediate publication. |
| O | Ordinary trade - A standard type of trade with normal settlement date traded through the Market Makers. |
| OC | Cancellation of OTC trade more than three days old. |
| PC | Previous day's contra. |
| PT | Closing Price Crossing Session Trade – order book trade resulting from the session that takes place after the closing auction has generated the day's closing UT. Executions can only take place at day's closing auction price. |
| QC | Cancellation of OTC trade after date of publication. |
| QF | Inter-fund cross with delayed publication requested. |
| QK | OTC trade with delayed publication requested. |
| QT | OTC trade. |
| SC | Cancellation of SI trade after date of publication. |
| SI | Systematic Internaliser (SI) – for executions not subject to the to the Rules of London Stock Exchange but instead using the MiFID SI regime. |
| SK | SI trade with delayed publication requested. |
| TK | OTC trade with delayed publication requested. |
| UT | Uncrossing Trade, order book trade from the end of auction period. |