Some GPO J type van data. A few months hard work here, going over old lists. I like to share, unlike some sites, please feel free to copy anything on this site for your own use.

GPO Fleet, Postal vans just had a fleet number, 
Telephone vans had a pre-fix of U which stood for Utility.

LUU 572 – 970   41308 – 41706   Morris J  100cf. mailvan

          971   42490              “       “       “

(610 with ‘Demister’ & Fog lamp. 634 = J531 Jersey. 
971 sold to Cyprus 4/51)

MLB 591 – 969   42491 – 42869   Morris J  100cf. mailvan

MLH 567 – 634   42881 – 42948   Morris J  100cf. mailvan

MYE   1 – 158   43204 – 43361      “       “       “

(104-6,8,9-26,9-47,9-54,6-8 had opening o/s windscreens)

MYF 492        U58826           Morris J  10cwt Utility (Prototype)

MYF 856 – 951   44060 – 44155   Morris J  100cf. mailvan

NXO   2 – 251   44857 – 45106      “       “       “

(115/129 to Jersey as J15121/J8363 – 249 to Cyprus Postal Dept. 4/54)

NYH 280 – 414  U66436 – U66570  Morris J  10cwt. Utility

 “  416 – 428   45515 – 45527      “   “  100cf. mailvan

 “  432         17054              “      Planning (Utilibus)

OYF 224 – 318  U67526 – U67620     “   J  10cwt. Utility

 “  332 – 841   50239 – 50758      “   “  100cf. mailvan

PGO   2         17110              “   “  R.I. van

 “   35 – 119   50762 – 50846      “   “  100cf. mailvan

(2 later re-regd 461 DJJ, it had a coachbuilt,largely 
wooden body apart from a std. front end)

PUL 435 – 456  U68407 – U68428     “   J  Planning

 “  480 – 611  U68429 – U68560     “   “  10cwt. Utility

RGJ 980 – 999   52246 – 52265      “   “  100cf. mailvan

RGK   1 – 490   52266 – 52755      “   “    “      “

 “  491 – 663  U69827 – U69999     “   “  10cwt. Utility

 “  664 – 730  U76000 - U76066     “   “    “      “

(9/11 to Jersey as J 17504/5)

RLB 725 – 784  U76475 – U76534  Morris J  Planning

SGH 479 – 572   53337 – 53430      “   “  100cf. mailvan

 “  573 – 609  U77490 – U77526     “   “  10cwt. Utility

 “  610 – 666  U77527 – U77583     “   “  Planning

SLO  26 -  65  U79004 – U79043     “   JB    “

 “   66 – 345   54327 – 54606      “   J   100cf. mailvan

 “  346 – 565   54607 – 54826      “   JB    “      “

(326 to Cyprus 11/56)

SXH 227 – 246  U79941 – U79960     “   J   Planning

 “  380 – 504  U79123 – U79247     “       10cwt. Utility

(237 with large rotatable roof ariel for use as a R.I. van)

TGC 309 – 356  U79892 – U79939  Morris J   Planning

 “  666 – 770  U79961 – U80065     “   “   10cwt. Utility

UXH 981 – 999   56204 – 56222      “   JB  100cf. mailvans

UXV   1 -  61   56223 – 56283      “   “    “       “

 “  379 – 396   56284 – 56301      “   “    “       “

 “  397 – 628   60000 – 60231      “   “    “       “

 “  650 – 658  U80906 – U80914     “   J    Planning

WLA   1 – 326   60974 – 61299      “   JB   100cf. mailvan

XXD 814 – 914   61911 – 62022      “   “      “       “

YLH  74 -  91  U82474 – U82491     “   J    10cwt Utility

 “  417 – 959   62648 – 63190      “   JB   100cf. mailvan

 “  962 – 981  U82496 – U82515     “   “    Planning

YXF   1 -  45  U82516 – U82560     “   J       “

 “  989 – 993  U84334 – U84338     “   JB      “

(1-45 + 989-993 some used as R.I. vans)

807 – 857 BLE  U84339 – U84389  Morris J    Planning

392 – 491 BYY   64938 – 65037     “    JB   100cf. mailvan

492 – 496  “   U85024 – 85028     “    “    Planning

922 – 949  “   U85212 – U85239    “    “       “

(492-496 some use as R.I. vans)

598 – 729 BXE   65120 – 65251   Morris JB   100cf. mailvan

311 – 334 BXY  U86015 – U86038    “    “    Planning

615 – 619  “   U86171 – U86175    “    “        “ 

This blog got a couple of hits from Vietnam today Hue and Hanoi ( that is Central Vietnam and North Vietnam) from John B, who even when on holiday took time out to check on the J type world, thanks John, a true enthusiast.

LYM 297 has chassis number 6733, this has been confirmed by The J type register who have added pictures of the van to their website in it's correct location, yes a nice early van, the 2nd oldest UK van in fact.