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Paramedics have been left mystery gifts on their ambulances, telling them "you are awesome" with £10 to spend on coffee and doughnuts.

London Ambulance Service crews have discovered the notes attached to their vehicles offering kind words of thanks.

The latest package came in a clear plastic envelope with official markings of "documents enclosed".

Healthcare workers said they were surprised when they discovered the envelopes contained a message of thanks.

The note from a mystery sender said: “You are awesome!

"Saving lives everyday is a contribution to this country that’s so enormous nothing could ever demonstrate the gratitude we all feel.

"Thank you for your commitment, service and all that you do for all of us."

"Coffee & Doughnuts are on us today." Enclosed was a £10 note.

Walthamstow healthcare professional Stephen Hines commented on Twitter to say thanks for the messages.

He said: "I don't know who is responsible for these, but it seems our ambulance crews are finding them attaches to vehicles. Thank you whoever you are!"

Tony Holden, a specialist crew member with St John's Ambulance, added one of the charity's crews also received a message.

A London Ambulance Service spokesman said: “All our teams across the Service are passionate about helping Londoners in need. Each month more than 300 members of our staff are thanked in cards and letters of appreciation from the public.

“If someone would like to thank one of our teams or crews we’d encourage them to get in touch via our website, over the phone or by email so we can ensure their message reaches the team.”

Last month, a person in Lincolnshire left a touching message and a £5 note after an ambulance blocked their driveway.

It read: “You blocked my drive. But it doesn’t matter because I wasn’t going out anyway. Enjoy your day – buy a coffee.”

However, ambulance services across the country have also come under attack from members of the public.

In August, one furious motorist in Leicester left a message reading: "You blocked my driveway. I waited 45 minutes for you to move. Please have some consideration where you park an ambulance! This is not the first time.”

And on Sunday, a callous crook in Birmingham smashed into an ambulance and stole crew members’ possessions as they treated a sick patient.

The crew had been tending to a patient inside a property when the thief struck. An iPhone was among the items taken.

Meanwhile, attacks on London Ambulance Service staff rose to 477 in 2017-18, from 456 in 2016.

Last month, a paramedic was attacked by a man while battling to save a girl who had collapsed in the street struggling to breathe.

It happened in Willesden Green and the attacker stuck his finger up the paramedic's nose.

In another attack, Sarah Ahmed forced medics to take refuge in their ambulance after they had tried to help her.

She wrecked more than £10,000 of life-saving equipment, including a defibrillator, during the alcohol-fuelled rampage.

Do you know who the mystery well-wisher is? Contact our news desk on 0203 615 2500 or news@standard.co.uk