diff --git a/docs/src/whatsnew/latest.rst b/docs/src/whatsnew/latest.rst
index 0cafd4e94e..ec7b8433f6 100644
--- a/docs/src/whatsnew/latest.rst
+++ b/docs/src/whatsnew/latest.rst
@@ -35,6 +35,9 @@ This document explains the changes made to Iris for this release
    non-existing paths, and added expansion functionality to :func:`~iris.io.save`.
    (:issue:`4772`, :pull:`4913`)
 
+#. `@trexfeathers`_ and `Julian Heming`_ added new mappings between CF
+   standard names and UK Met Office LBFC codes. (:pull:`4859`)
+
 
 🐛 Bugs Fixed
 =============
@@ -140,6 +143,7 @@ This document explains the changes made to Iris for this release
     core dev names are automatically included by the common_links.inc:
 
 .. _@TTV-Intrepid: https://github.com/TTV-Intrepid
+.. _Julian Heming: https://www.metoffice.gov.uk/research/people/julian-heming
 
 
 
diff --git a/lib/iris/fileformats/um_cf_map.py b/lib/iris/fileformats/um_cf_map.py
index 8aee67ae3e..9091507668 100644
--- a/lib/iris/fileformats/um_cf_map.py
+++ b/lib/iris/fileformats/um_cf_map.py
@@ -16,10 +16,12 @@
 LBFC_TO_CF = {
     5: CFName('atmosphere_boundary_layer_thickness', None, 'm'),
     16: CFName('air_temperature', None, 'K'),
+    22: CFName('wet_bulb_potential_temperature', None, 'K'),
     23: CFName('soil_temperature', None, 'K'),
     27: CFName('air_density', None, 'kg m-3'),
     36: CFName('land_area_fraction', None, '1'),
     37: CFName('sea_ice_area_fraction', None, '1'),
+    42: CFName('upward_air_velocity', None, 'm s-1'),
     50: CFName('wind_speed', None, 'm s-1'),
     56: CFName('x_wind', None, 'm s-1'),
     57: CFName('y_wind', None, 'm s-1'),
@@ -28,11 +30,16 @@
     83: CFName('potential_vorticity_of_atmosphere_layer', None, 'Pa-1 s-1'),
     94: CFName('convective_rainfall_amount', None, 'kg m-2'),
     97: CFName('rainfall_flux', None, 'kg m-2 s-1'),
+    98: CFName('convective_rainfall_flux', None, 'kg m-2 s-1'),
+    99: CFName('stratiform_rainfall_flux', None, 'kg m-2 s-1'),
     102: CFName('stratiform_rainfall_amount', None, 'kg m-2'),
+    106: CFName('soil_moisture_content', None, 'kg m-2'),
     108: CFName('snowfall_flux', None, 'kg m-2 s-1'),
     111: CFName('surface_runoff_amount', None, 'kg m-2'),
     116: CFName('stratiform_snowfall_amount', None, 'kg m-2'),
     117: CFName('convective_snowfall_amount', None, 'kg m-2'),
+    118: CFName('stratiform_snowfall_flux', None, 'kg m-2 s-1'),
+    119: CFName('convective_snowfall_flux', None, 'kg m-2 s-1'),
     122: CFName('moisture_content_of_soil_layer', None, 'kg m-2'),
     183: CFName('wind_speed', None, 'm s-1'),
     200: CFName('toa_incoming_shortwave_flux', None, 'W m-2'),
@@ -1157,7 +1164,9 @@
     CFName('cloud_area_fraction_in_atmosphere_layer', None, '1'): 1720,
     CFName('convective_cloud_area_fraction', None, '1'): 34,
     CFName('convective_rainfall_amount', None, 'kg m-2'): 94,
+    CFName('convective_rainfall_flux', None, 'kg m-2 s-1'): 98,
     CFName('convective_snowfall_amount', None, 'kg m-2'): 117,
+    CFName('convective_snowfall_flux', None, 'kg m-2 s-1'): 119,
     CFName('dimensionless_exner_function', None, '1'): 7,
     CFName('divergence_of_wind', None, 's-1'): 74,
     CFName('downward_heat_flux_in_sea_ice', None, 'W m-2'): 261,
@@ -1203,6 +1212,7 @@
     CFName('soil_albedo', None, '1'): 1395,
     CFName('soil_carbon_content', None, 'kg m-2'): 1397,
     CFName('soil_hydraulic_conductivity_at_saturation', None, 'm s-1'): 333,
+    CFName('soil_moisture_content', None, 'kg m-2'): 106,
     CFName('soil_moisture_content_at_field_capacity', None, 'kg m-2'): 1559,
     CFName('soil_porosity', None, '1'): 332,
     CFName('soil_suction_at_saturation', None, 'Pa'): 342,
@@ -1212,8 +1222,10 @@
     CFName('specific_kinetic_energy_of_air', None, 'm2 s-2'): 60,
     CFName('stratiform_cloud_area_fraction_in_atmosphere_layer', None, '1'): 220,
     CFName('stratiform_rainfall_amount', None, 'kg m-2'): 102,
+    CFName('stratiform_rainfall_flux', None, 'kg m-2 s-1'): 99,
     CFName('stratiform_rainfall_rate', None, 'kg m-2 s-1'): 99,
     CFName('stratiform_snowfall_amount', None, 'kg m-2'): 116,
+    CFName('stratiform_snowfall_flux', None, 'kg m-2 s-1'): 118,
     CFName('subsurface_runoff_amount', None, 'kg m-2'): 112,
     CFName('subsurface_runoff_flux', None, 'kg m-2 s-1'): 1533,
     CFName('surface_albedo_assuming_deep_snow', None, '1'): 328,
@@ -1260,6 +1272,7 @@
     CFName('volume_fraction_of_condensed_water_in_soil_at_critical_point', None, '1'): 330,
     CFName('volume_fraction_of_condensed_water_in_soil_at_wilting_point', None, '1'): 329,
     CFName('water_potential_evaporation_flux', None, 'kg m-2 s-1'): 115,
+    CFName('wet_bulb_potential_temperature', None, 'K'): 22,
     CFName('wind_mixing_energy_flux_into_sea_water', None, 'W m-2'): 182,
     CFName('wind_speed', None, 'm s-1'): 50,
     CFName('x_wind', None, 'm s-1'): 56,