There were 37 constituencies where we were second and Farage's party got more votes than the majority. This is the difference between a majority of 80 and one of (spookily enough) 144.
Do you have link to the list?
In increasing order of majority (all Labour except #18), they are:
1. Bedford (LAB maj 145; BXP 896)
2. Coventry North West (LAB maj 208; BXP 1956)
3. Alyn & Deeside (LAB maj 213; BXP 2678)
4. Dagenham & Rainham (LAB maj 293; BXP 2887)
5. Coventry South (LAB maj 401; BXP 1432)
6. Weaver Vale (LAB maj 562; BXP 1380)
7. Warwick & Leamington (LAB maj 789; BXP 807)
8. Wansbeck (LAB maj 814; BXP 3141)
9. Newport West (LAB maj 902; BXP 1727)
10. Stockton North (LAB maj 1027; BXP 3907)
11. Hemsworth (LAB maj 1180; BXP 5930)
12. Wolverhampton South East (LAB maj 1235; BXP 2094)
13. Hull East (LAB maj 1239; BXP 5764)
14. Normanton, Pontefract & Castleford (LAB maj 1276; BXP 8032)
15. Chesterfield (LAB maj 1451; BXP 4771)
16. Oldham East & Saddleworth (LAB maj 1499; BXP 2980)
17. Warrington North (LAB maj 1509; BXP 2626)
18. Carmarthen East & Dinefwr (PC maj 1809; BXP 2311)
19. Newport East (LAB maj 1992; BXP 2454)
20. Wentworth & Dearne (LAB maj 2165; BXP 7019)
21. Doncaster Central (LAB maj 2278; BXP 6842)
22. Bradford South (LAB maj 2346; BXP 2819)
23. Doncaster North (LAB maj 2370; BXP 8297)
24. Halifax (LAB maj 2569; BXP 2813)
25. Hull West & Hessle (LAB maj 2856; BXP 5638)
26. Stalybridge & Hyde (LAB maj 2946; BXP 3591)
27. Sunderland Central (LAB maj 2964; BXP 5047)
28. Worsley & Eccles South (LAB maj 3101; BXP 3224)
29. Houghton & Sunderland South (LAB maj 3115; BXP 6165)
30. Rotherham (LAB maj 3121; BXP 6125)
31. Hartlepool (LAB maj 3595; BXP 10603)
32. Washington & Sunderland West (LAB maj 3723; BXP 5439)
33. Torfaen (LAB maj 3742; BXP 5742)
34. Sheffield South East (LAB maj 4289; BXP 4478)
35. Makerfield (LAB maj 4740; BXP 5817)
36. Blaydon (LAB maj 5531; BXP 5833)
37. Easington (LAB maj 6581; BXP 6744)