SELECT LOCATION FROM station EXCEPT SELECT LOCATION FROM station WHERE number_of_platforms  >=  15
SELECT LOCATION FROM station EXCEPT SELECT LOCATION FROM station WHERE number_of_platforms  >=  15 <table_name> : station col : Station_ID | Name | Annual_entry_exit | Annual_interchanges | Total_Passengers | Location | Main_Services | Number_of_Platforms row 1 : 1 | London Waterloo | 94.046 | 9.489 | 103.534 | London | South Western Main Line West of England Main Line | 19 row 2 : 2 | London Victoria | 76.231 | 9.157 | 85.38 | London | Brighton Main Line Chatham Main Line | 19 row 3 : 3 | London Bridge | 52.634 | 8.742 | 61.376 | London | South Eastern Main Line Thameslink | 12 row 4 : 4 | London Liverpool Street | 57.107 | 2.3529999999999998 | 59.46 | London | Great Eastern Main Line West Anglia Main Line | 18 row 5 : 5 | London Euston | 36.609 | 3.832 | 40.44 | London | West Coast Main Line | 18 row 6 : 6 | London Charing Cross | 38.005 | 1.99 | 39.995 | London | South Eastern Main Line | 6 row 7 : 7 | Birmingham New Street | 31.214 | 5.118 | 36.331 | Birmingham | West Coast Main Line Cross Country Route | 13 row 8 : 8 | London King's Cross | 27.875 | 3.022 | 30.896 | London | East Coast Main Line | 12 row 9 : 9 | Glasgow Central | 26.639 | 3.018 | 29.658 | Glasgow | West Coast Main Line | 17 row 10 : 10 | East Croydon | 20.551 | 6.341 | 26.892 | London | Brighton Main Line | 6 row 11 : 11 | London St Pancras | 22.996 | 3.676 | 26.672 | London | Midland Main Line Thameslink High-Speed 1 Eurostar | 15 row 12 : 12 | Stratford | 21.797 | 2.064 | 23.862 | London | Great Eastern Main Line Lea Valley Lines | 15
col : Location row 1 : Birmingham