Transport police said it had been a successful year

Its annual report showed a jump of nearly 50% in public order offences and drug related crimes shot up 103.6%.

But overall there was just a 0.4% rise in crime, with a 29% drop in reported robberies and 1.4% fall in sex crimes.

BTP Chief Constable Ian Johnston said the London bombs had overshadowed a successful year in fighting crime on the railways.

There was a total of 18,399 crimes on LU last year, a rise of just 70.

Busy and successful

The BTP's report showed that third (36%) of all crime on LU and the Docklands Light Railway was pick pocketing.

There was also a 2.6% decrease in criminal damage and 12.8% drop in theft from passengers.

But there was a 28.4% rise in theft of railway property.

Mr Johnston said: "The tragic deaths of 7 July and subsequent events are in everyone's mind at the moment, but alongside our counter terrorist activity BTP has been busy, and successful, on many other fronts.

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"This year has been one of the most successful years in BTP's history and we have achieved all our operational targets in very challenging circumstances."

The Rail Maritime and Transport union renewed its call for the return of guards to all trains and for more uniformed staff on stations.

General secretary Bob Crow said: "Our members have to bear the brunt of aggressive, drunken behaviour, particularly at night and particularly when working alone.