Lancaster's skipped by two Glasgow – West Midlands – Euston services, the Caledonian Sleeper(s) and Lumo, with everything else calling.
Swindon (everything calls except 2 tpd from Paddington to Swansea / Carmarthen and Lumo Carmarthen services when / if they start, and the Night Riviera when diverted there).
Weston-super-Mare (one CrossCountry service in each direction) and Northampton (a late night Manchester to Euston) are cases of the only passenger services passing through being ones which I suspect are to keep route knowledge.
Banbury (skipped by five CrossCountry services on the Reading to York / Newcastle route).
Brockenhurst (two morning London-bound and four evening Weymouth South Western services don't call).
Colchester and Manningtree (08:00 Norwich to Liverpool Street and 17:00 return).