A new alliance among public sector workers in London is threatening a wave of co-ordinated strikes in the Capital.

Next week, Royal Mail employees belonging to the Communication Workers' Union and Unison members at local authorities are to walk out for 24 hours in an attempt to secure £4,000 in London allowances.

Both unions are members of the newly formed London Public Sector Alliance, established to co-ordinate industrial action to win better terms and conditions.