The dvb-t uk-* mux files are out of date, and the source quoted for the data is a dead link. The current technical details are now on The ofcom site which includes a link to a spreadsheet with the mux information for every UK transmitter (including local (LTV), Northern Ireland (NI), and Geographic Interleaved (GI - Manchester)). It seems up to date, last updated last year.

I can't upload an archive with the new mux files (and the script which produces the files within the directory it is run) so it can be downloaded here.

This is an example for uk-BluebellHill:-
`#---------------------------------------------------------------

Generated from:

https://www.ofcom.org.uk/siteassets/resources/documents/spectrum/tv-transmitter-guidance/700-plan-clearance.xlsx

Date: Wed Dec 10 17:33:31 GMT 2025

#---------------------------------------------------------------

ITV Region: Meridian East

BBC Region: South East

Group: Bluebell Hill

Site Name: Bluebell Hill

Notes: SFN (PSB multiplexes) with Gillingham MOT and Sittingbourne Stockers Hill. SFN (COM multiplexes) with Heathfield and Sittingbourne Stockers Hill.

#---------------------------------------------------------------
[C32 PSB1 ]
DELIVERY_SYSTEM = DVBT
FREQUENCY = 562000000
BANDWIDTH_HZ = 8000000
CODE_RATE_HP = 2/3
CODE_RATE_LP = NONE
MODULATION = QAM/64
TRANSMISSION_MODE = 8K
GUARD_INTERVAL = 1/32
HIERARCHY = NONE
INVERSION = AUTO

[C34 PSB2 ]
DELIVERY_SYSTEM = DVBT
FREQUENCY = 578000000
BANDWIDTH_HZ = 8000000
CODE_RATE_HP = 2/3
CODE_RATE_LP = NONE
MODULATION = QAM/64
TRANSMISSION_MODE = 8K
GUARD_INTERVAL = 1/32
HIERARCHY = NONE
INVERSION = AUTO

[C45 PSB3 ]
DELIVERY_SYSTEM = DVBT2
FREQUENCY = 666000000
BANDWIDTH_HZ = 8000000
CODE_RATE_HP = 2/3
CODE_RATE_LP = NONE
MODULATION = QAM/256
TRANSMISSION_MODE = 32K
GUARD_INTERVAL = 1/128
HIERARCHY = NONE
INVERSION = AUTO

[C40 COM4 ]
DELIVERY_SYSTEM = DVBT
FREQUENCY = 626000000
BANDWIDTH_HZ = 8000000
CODE_RATE_HP = 3/4
CODE_RATE_LP = NONE
MODULATION = QAM/64
TRANSMISSION_MODE = 8K
GUARD_INTERVAL = 1/32
HIERARCHY = NONE
INVERSION = AUTO

[C43 COM5 ]
DELIVERY_SYSTEM = DVBT
FREQUENCY = 650000000
BANDWIDTH_HZ = 8000000
CODE_RATE_HP = 3/4
CODE_RATE_LP = NONE
MODULATION = QAM/64
TRANSMISSION_MODE = 8K
GUARD_INTERVAL = 1/32
HIERARCHY = NONE
INVERSION = AUTO

[C46 COM6 ]
DELIVERY_SYSTEM = DVBT
FREQUENCY = 674000000
BANDWIDTH_HZ = 8000000
CODE_RATE_HP = 3/4
CODE_RATE_LP = NONE
MODULATION = QAM/64
TRANSMISSION_MODE = 8K
GUARD_INTERVAL = 1/32
HIERARCHY = NONE
INVERSION = AUTO

[C21 LTVMux Maidstone L-DTPS]
DELIVERY_SYSTEM = DVBT
FREQUENCY = 474000000
BANDWIDTH_HZ = 8000000
CODE_RATE_HP = 3/4
CODE_RATE_LP = NONE
MODULATION = QPSK
TRANSMISSION_MODE = 8K
GUARD_INTERVAL = 1/32
HIERARCHY = NONE
INVERSION = AUTO