GB Railfreight's class 66/7 (JT42CWR) number 66751, works number 20038513-4 (previously ERSR 6609, then Beacon Rail Leasing Limited's locomotive 29006 (in Germany), and 92 80 1266 028-0). Here it is photographed hauling empty gypsum containers mounted on flat wagons from Mountfield Sidings (GBRf) East Sussex to Doncaster Down Decoy (4E19) on 4 November 2014. To comply with gas emission regulations limestone (CaCO3) delivered to the power station (by other trains) is used to remove sulfur dioxide (SO2) from the flue gasses, by converting it into gypsum (CaSO4·2H2O). The waste product (gypsum) is then delivered to British Gypsum's Robertsbridge Works by train where it is used to manufacture plaster and plasterboard. 20038513-4 (66751) was built in 2003 and delivered to HSBC Rail Limited, London.

In order from front to back the wagons being hauled were 640641, 640678, 640647, 640690, 640642, 640901, 640661, 640633, 640673, 640674, 640688, 640644, 640682, 640634, 640660, 640651, 640657 and 640666.

According to Realtime Trains the route and timings were; Mountfield Sidings [XMX]....1130.........................1139............................9L Mountfield Tunnel.................1132..........................1141.............................9L Robertsbridge [RBR].............1134 1/2...................1148 1/2....................14L Wadhurst [WAD]....................1147..........................1159 1/2....................12L Tunbridge Wells [TBW] 1.....1156/1158................1207 1/2/1209 1/2...11L Tonbridge [TON] UF.............1213..........................1218 1/2.....................5L Sevenoaks [SEV] 1.................1223........................1228 3/4...................5L Chelsfield [CLD].....................1229 1/2..................1235 1/4....................5L Orpington [ORP] 2.................1231..........................1236 3/4....................5L Petts Wood Junction............1232 1/2..................1240............................7L Bickley Junction[XLY]..........1252........................1250...........................1E Bromley South [BMS]...........1257.........................1255...........................2E Shortlands [SRT]....................1300........................1258............................1E Shortlands Junction..............1301.........................1259............................1E Bellingham [BGM].................1304 1/2..................1301 1/4.....................3E Nunhead [NHD] 1...................1308........................1308 3/4...................RT Peckham Rye [PMR] 3..........1309 1/2..................1311 1/4.........................1L Crofton Road Junction.........1310 1/2...................1313............................2L Denmark Hill [DMK] 1............1311 1/2....................1313 1/2......................2L Voltaire Road Junction........1317..........................1318..............................1L Clapham Junction [CLJ] 5...1328 1/2..................1331 1/4......................2L Wandsworth Town ...............1330 1/2..................1334 1/4......................3L Putney [PUT] 3.......................1334.........................1336...........................2L Barnes [BNS] 3.......................1337.........................1339 1/4.....................2L Barnes Bridge [BNI] 2...........1339.........................1341 3/4......................3L Chiswick [CHK] 2...................1341 1/2...................1343 1/4.......................1L New Kew Junction................1344.........................1346 1/4.....................2L Kew East Junction................1347.........................1347 1/4.....................RT Acton Central [ACC].............1355........................1353 1/2.....................1E Acton Wells Junction...........1357 1/2..................1355 1/4....................2E Willesden Junction 4............1359 1/2/1401 1/2..1358 1/2/1401 1/2.....RT Kensal Green Junction........1403 1/2..................1403 1/2....................RT Brondesbury Park [BSP] 1....1407.........................1405 1/2.....................1E West Hampstead 2...............1409 1/2..................1407 1/4.....................2E Hampstead Heath 2.............1413..........................1410 3/4.....................2E Gospel Oak [GPO].................1415..........................1412 1/2.....................2E Upper Holloway [UHL] 2.....1419 1/2...................1415............................4E Alexandra Palace [AAP] 3...1443.........................1440 1/4....................2E New Southgate [NSG] 4......1446.........................1443 1/2.....................2E Oakleigh Park [OKL] 4..........1450........................1447 1/2.....................2E New Barnet [NBA] 4..............1451 1/2...................1449 1/2....................2E Hadley Wood [HDW] 4.........1454 1/2..................1452 3/4.....................1E Potters Bar [PBR] 4................1459........................1459...........................RT Brookmans Park [BPK] 4......1502........................1502..........................RT Welham Green [WMG] 2......1504........................1504 1/4....................RT Hatfield [HAT] 3.....................1507 1/2..................1507 3/4....................RT Welwyn Garden City 3.........1512.........................1511 1/2......................RT Digswell Junction..................1514/1525...............NoRep/1524.............1E Welwyn North [WLW] 2........1526 1/2..................1526...........................RT Woolmer Green Junction....1529........................1528 1/4....................RT Knebworth [KBW] 4...............1530........................1530...........................RT Stevenage [SVG] 4................1532 1/2..................1532 3/4....................RT Hitchin [HIT] 2........................1540........................1536 3/4....................3E Arlesey [ARL] 2......................1544.........................1541 1/2.....................2E Biggleswade [BIW] 4............1547 1/2..................1545 1/2.....................1E Sandy [SDY] 2........................1550........................1547 3/4....................2E St Neots [SNO] 1....................1556........................1554 1/2.....................1E Huntingdon [HUN] 3.............1602........................1601............................RT Holme Junction [XHO].........1611 1/2....................1612 1/2.......................1L Fletton Junction.....................1617 1/2...................1621.............................3L Peterborough [PBO] 4.........1621/1632 1/2.........1626 1/2/1637 3/4...5L Helpston Junction.................1640........................1647 1/2......................7L Tallington Junction...............1644 1/2..................1652 1/4.....................7L Stoke Junction.......................1702/1710...............NoRep/1711 1/4..........1L Grantham [GRA] 2.................1717..........................1717 1/4......................RT Claypole Loop........................1725 1/2..................1725 1/2.....................RT Newark North Gate 1............1729 1/2/1734 1/2..1731 3/4/1732...........2E Newark Crossing East Jn....1737.........................1738 1/2.......................1L Gainsborough Lea Road ....1819.........................1833..........................14L Gainsborough Trent Jn........1827 1/2..................1835............................7L Bessacarr Junction...............1851.........................1853 1/2....................2L