I believe one I use provides everything you need?
--Table space
SELECT
t.NAME AS TableName,
p.rows AS RowCounts,
SUM(a.total_pages)/128 AS TotalSpaceMB,
SUM(a.used_pages)/128 AS UsedSpaceMB,
(SUM(a.total_pages) - SUM(a.used_pages))/128 AS UnusedSpaceMB
FROM
sys.tables t
INNER JOIN
sys.indexes i ON t.OBJECT_ID = i.object_id
INNER JOIN
sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN
sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN
sys.schemas s ON t.schema_id = s.schema_id
WHERE
t.NAME NOT LIKE 'dt%'
AND t.is_ms_shipped = 0
AND i.OBJECT_ID > 255
AND p.[rows] > 500000
GROUP BY
t.Name, p.Rows
ORDER BY
t.Name
Note the conditions in the WHERE statement which may be different for you. This is one I obtained from another website I believe, so it isn't my work! I can't find the reference to which website though...
EDIT
OK, this one is better, includes non clustered index space, identifies the schema for the tables and includes decimal points:
WITH idxs AS (
SELECT
t.object_id as TableID,
t.name AS TableName,
SUM(a.used_pages)/128.0 AS 'Indexsize(MB)'
--, i.*
FROM
sys.tables t
INNER JOIN sys.indexes AS i ON t.object_id = i.object_id
INNER JOIN sys.partitions AS p ON p.OBJECT_ID = i.OBJECT_ID AND p.index_id = i.index_id
INNER JOIN sys.allocation_units AS a ON a.container_id = p.partition_id
WHERE i.[type]=2
GROUP BY t.object_id, t.name
)
SELECT
s.name AS SchemaName,
t.NAME AS TableName,
p.rows AS RowCounts,
SUM(a.total_pages)/128.0 AS TotalSpaceMB,
SUM(a.used_pages)/128.0 AS UsedSpaceMB,
(SUM(a.total_pages) - SUM(a.used_pages))/128.0 AS UnusedSpaceMB,
idxs.[Indexsize(MB)]
FROM
sys.tables t
INNER JOIN
sys.indexes i ON t.OBJECT_ID = i.object_id
INNER JOIN
sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN
sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN
sys.schemas s ON t.schema_id = s.schema_id
LEFT OUTER JOIN
idxs ON t.object_id = idxs.TableID
WHERE
t.NAME NOT LIKE 'dt%'
AND t.is_ms_shipped = 0
AND i.OBJECT_ID > 255
--AND p.[rows] > 500000
GROUP BY
s.name, t.Name, p.Rows, idxs.[Indexsize(MB)]
ORDER BY
t.Name