A 27-year-old man held on suspicion of conspiracy to commit robbery in connection with the £53million Securitas raid in Tonbridge has been released on police bail.

The man, from Thamesmead in south London, had been arrested last Friday.

Meanwhile, a 10th person has been charged in connection with the UK's biggest ever cash robbery.

Sales assistant, Katie Louise Philp, 23, of Hadlow Road, Tonbridge, appeared at Maidstone Magistrates' Court on Saturday charged with conspiracy to commit robbery and kidnap.

She spoke only to confirm her name, age and address. No application was made for bail. She was remanded in custody until Monday, July 10, when she will appear at the Old Bailey alongside seven others who have already been charged.

A woman, 22, held in Woodford, Essex, over assisting offenders and a man, 29, from Bromley, held over conspiracy to rob and kidnap, have both been bailed.

Since the robbery on the night of 21/22 February, 36 people have been arrested and 10 charged.

These include Lee Murray, arrested in Morocco last Sunday following a UK request for his extradition for robbery, kidnap and other offences related to the robbery.

A reward of £1.5m is waiting to be claimed for information that helps detectives track down the £30m still missing from the robbery.

So far about £20m has been recovered in 13 separate seizures across the south east of England, Chief Constable Mike Fuller said on Friday.

Officers are also investigating whether a further £1m recovered last week is linked to the robbery.

Mr Fuller renewed appeals for people to come forward if they have any knowledge of the crime, witnessed it or who have information on where the outstanding cash is now.

The reward, offered by Securitas, represents five per cent of the missing millions and will be paid if the money is traced and those responsible for the robbery are arrested and convicted.

Anyone who has information can ring the Kent Police incident room number - 01622 652361.Alternatively, anyone who has information can contact Kent Crimestoppers on freephone 0800 555111 if they wish to remain anonymous.