Katie Reynolds, 30, of Culworth Close, and Sam Normoyle, 28, of Aylesford Street, were sentenced at Warwick Crown Court on Monday.

Both had admitted conspiring to supply heroin and Normoyle conspiring to supply crack cocaine.

Their arrests were part of a police operation codenamed Operation Laser, and prosecutor Matthew Brook described how they were caught after an undercover officer known as Craig met heroin user Marina Certo in a Leamington park and discussed who was selling heroin.

After arranging to meet a dealer known as D, the officer and Certo went to a meeting place where Reynolds, who was counting a large amount of cash, sold Craig a wrap of heroin for £10.

The following month a second meeting was arranged through a woman who Mr Brook described as D's 'secretary', who told Craig to go to the Eagle recreation ground.

He was met by Normoyle who had a tin containing eight wraps, from which the officer was handed one and asked to check that it was heroin because some were crack cocaine.

In later meetings Reynolds or Normoyle handed over drugs to Craig and others outside Shrubland Street Primary School, at the recreation ground and at railway arches in Leamington.

On one occasion Normoyle told Craig he had already supplied 40 wraps that day.

Mr Brook said Reynolds had a previous conviction for possessing a class A drug with intent to supply it and a caution for taking heroin into Leamington police station for her then boyfriend, who was in custody.

Peter Freeman, defending, said Normoyle had been a scaffolder for seven years, but after losing his job was told he could get free drugs by helping to supply them.

He said Normoyle and Reynolds were 'paid' by being given drugs for themselves, as well as Reynolds being given some money to buy alcohol.

Jailing the pair, Judge Marten Coates said: "It was a sophisticated conspiracy, with you two performing an essential part."