To ask the Secretary of State for Transport, how many British Transport Police officers there were in London on 1 October (a) 2010, (b) 2011, (c) 2012, (d) 2013, (e) 2014 and (f) 2015.

To ask the Secretary of State for Transport, how many British Transport Police officers in London were contracted to work night shifts as at 1 October (a) 2010, (b) 2011, (c) 2012, (d) 2013, (e) 2014 and (f) 2015.

To ask the Secretary of State for Transport, how many British Transport Police officers were working night shifts in London on each day of September 2015.

The table below sets out the number of British Transport Police (BTP) officers working in Greater London (all London boroughs) on 1 October in each year between 2010 and 2015:

The table below sets out the number of officers in Greater London (all London boroughs) which were contracted to work night shifts as at 1 October in each year between 2010 and 2015:

All BTP officers could potentially be rostered on to night shifts if necessary.

The table below sets out the number of BTP officers that were working night shifts in Greater London (all London Boroughs) on each day of September 2015:

It is important to note that the number of officers contracted and due to work night shifts would have increased if the night tube had not been deferred.