You can browse the full map in my link above.
here are the deleted congs in the UK
CONG Wallsend - Deleted
Language: E
GROUP Newcastle Upon Tyne, Benwell Slovak Group - Newcastle Upon Tyne, Benwell - Deleted
Language: V
CONG Newcastle Upon Tyne, Gosforth - Deleted
Language: E
CONG Prudhoe - Deleted
Language: E
GROUP St Andrews Chinese (Mandarin) Group - St Andrews - Deleted
CONG Edinburgh, Sign Language - Deleted
GROUP Middlesbrough, North Ormesby Polish Group - Middlesbrough, North Ormesby - Deleted
GROUP York, Heworth Chinese (Mandarin) Group - York, Heworth - Deleted
GROUP Newcastle-Under-Lyme, Cross Heath Tagalog Group - Newcastle Under Lyme, Cross Heath - Deleted
CONG King's Lynn, Polish - Deleted
GROUP Bedford, Fenlake Italian Group - Bedford, Fenlake - Deleted
GROUP Oxford, Cherwell Chinese (Mandarin) Group - Oxford, Cherwell - Deleted
GROUP Reading, Prospect Park Nepali Group - Reading, Prospect Park - Deleted
Language: NP
GROUP Colchester, Highwoods Polish Pregroup - Colchester, Highwoods - Deleted
CONG London, Bulgarian - Deleted
CONG London, Tagalog South - Deleted