GB Railfreight's class 66/7 (JT42CWR) number 66705 in First GBRf blue and mustard yellow livery with orange cantrail and solebar stripes. Here it is photographed hauling empty gypsum containers mounted on flat wagons from Mountfield Sidings (GBRf) East Sussex to Doncaster Down Decoy (4E19) on 15 September 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. 66705 (works number 20008201-5) was built by General Motors Electro-Motive Division, London, Ontario, Canada in 2001 and unloaded from the Heavy Lift Ship MV "Jumbo Challenger" at Newport Docks in March 2001.

According to Realtime Trains the route and timings were; Mountfield Sidings [XMX].........1130.........................1121...........................9E Mountfield Tunnel......................1132..........................1122........................10E Robertsbridge [RBR]...................1134 1/2...................1129..........................5E Wadhurst [WAD]..........................1147..........................1138 3/4...................8E Tunbridge Wells [TBW] 1...........1156/1158................1154 1/4/1156 1/2.....1E Tonbridge [TON] UF...................1213..........................1212.........................RT Sevenoaks [SEV] 1......................1223........................1224 1/2....................1L Chelsfield [CLD]...........................1229 1/2..................1230........................RT Orpington [ORP] 2......................1231..........................1231.........................RT Petts Wood Junction[XPE]........1232 1/2..................1233 1/2....................1L Bickley Junction[XLY]................1252........................1239 1/4.................12E Bromley South [BMS].................1257.........................1242 1/2.................14E Shortlands [SRT]..........................1300........................1243 1/2.................16E Shortlands Junction[XOR]........1301.........................1244.......................16E Bellingham [BGM].......................1304 1/2..................1246.......................18E Nunhead [NHD] 1........................1308........................1254.......................13E Peckham Rye [PMR] 3................1309 1/2..................1257.......................12E Crofton Road Junction..............1310 1/2...................1306 1/2..................3E Denmark Hill [DMK] 1..................1311 1/2....................1308.........................3E Voltaire Road Junction [XVJ]...1317..........................1314..........................3E Clapham Junction [CLJ] 5.........1327 1/2..................1329 1/4....................1L Wandsworth Town [WNT] 2.....1330.........................1333 3/4..................3L Putney [PUT] 3.............................1333 1/2..................1336 1/2...................3L Barnes [BNS] 3.............................1337.........................1341..........................4L Barnes Bridge [BNI] 2................1339.........................1343 1/2...................4L Chiswick [CHK] 2........................1341 1/2...................1345 3/4..................4L New Kew Junction......................1344.........................1348 3/4..................4L Kew East Junction......................1347.........................1350.........................3L Acton Central [ACC]...................1355........................1354 1/2..................RT Acton Wells Junction.................1357 1/2..................1357 1/2..................RT Willesden Junction [WIJ] 4.......1359 1/2/1401 1/2..1400 3/4/1402......RT Kensal Green Junction[XKG]...1403 1/2..................1403 3/4.................RT Brondesbury Park [BSP] 1.........1407.........................1406........................RT West Hampstead [WHD] 2........1409 1/2..................1408..........................1E Hampstead Heath [HDH] 2......1413..........................1410 3/4...................2E Gospel Oak [GPO]......................1415..........................1412 3/4...................2E Upper Holloway [UHL] 2...........1419 1/2...................1414 3/4...................4E Alexandra Palace [AAP] 3.........1443.........................1445.........................2L New Southgate [NSG] 4............1446.........................1448.........................2L Oakleigh Park [OKL] 4...............1450........................1450 1/2.................RT New Barnet [NBA] 4...................1451 1/2...................1451 1/2...................RT Hadley Wood [HDW] 4..............1454 1/2..................1453 3/4.................RT Potters Bar [PBR] 4.....................1459........................1459........................RT Brookmans Park [BPK] 4...........1502........................1501 1/2..................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 Welwyn North [WLW] 2..............1526 1/2..................1514 1/2...................11E Woolmer Green Junction..........1529........................1516 1/2..................12E Knebworth [KBW] 4....................1530........................1518........................12E Stevenage [SVG] 4.....................1532 1/2..................1520 1/4................12E Hitchin [HIT] 2..............................1540........................1525 3/4................14E Arlesey [ARL] 2............................1544.........................1531 1/4..................12E Biggleswade [BIW] 4..................1547 1/2..................1536 3/4................10E Sandy [SDY] 2..............................1550........................1539 1/4.................10E St Neots [SNO] 1..........................1556........................1545 3/4................10E Huntingdon [HUN] 3...................1602........................1555.........................6E Holme Junction [XHO]...............1611 1/2....................1610 1/2..................RT Peterborough [PBO] 4...............1621/1632 1/2.........1622/1629 3/4.......2E Helpston Junction......................1640........................1639........................RT Tallington Junction.....................1644 1/2..................1643 3/4.................RT Stoke Junction.............................1702/1710...............N/R/1709 1/4.........RT Grantham [GRA] 2.......................1717..........................1716 3/4..................RT Claypole Loop.............................1725 1/2..................1725 1/4..................RT Newark North Gate [NNG] 1.....1729 1/2/1734 1/2..1731/1731.................3E Newark Crossing East Jn..........1737.........................1734 1/2...................2E Gainsborough Lea Road ..........1819.........................1814 1/2....................4E Gainsborough Trent Jn.............1827 1/2..................1816.........................11E