These are the images from inside the Liverpool HQ of one of the UK's biggest Covid PCR testing firms.
The ECHO was granted exclusive access to the Liverpool Science Park base of BioGrad Diagnostics - a firm that holds the capacity to process up to 20,000 tests a day.
It comes as Dr Natalie Kenny, CEO of the firm, calls on the Government to "vet" the official providers list after alleged "excessive" pricing and "exploitative" practices were slammed by the Health Secretary.
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Dr Kenny said the Government "desperately" needs a more in-depth evaluation of its official providers list.
Earlier this week, Health Secretary Sajid Javid called on the Competition and Markets Authority (CMA) to step in and investigate the practices of PCR Covid test firms.
Recently, there have been widespread reports of vast differences paid by holiday goers and business travellers for PCR tests being offered by different companies.
Dr Kenny spoke to the ECHO on a tour of the firm's Liverpool Science Park HQ, which is currently processing up to 10,000 to 15,000 tests per day from across the UK.
She said: “The Government desperately needs a more in-depth evaluation of its official providers list."
She alleged the list also included firms advertising tests for cheaper than the price shown when the customer visits the website.
She said: "At BioGrad, we are pricing our tests at the fairest price, to ensure that the world can return to normal and at £50 a test that is extremely reasonable.
"More due diligence needs to be done to vet these companies who are claiming to be offering the ‘cheapest tests on the market' and as more countries are placed onto the green list, it is imperative that this is acted upon quickly."
Currently, the cost of PCR tests varies enormously between providers, with the average costing around £75.
However, some firms are offering express PCR test results within 90 minutes at a cost of up to £400.
This makes UK PCR tests among the costliest in Europe - partly due to the 20% VAT charge applied on top.
This week, Mr Javid wrote to CMA chief executive Andrea Coscelli calling for a "rapid high-level" review to protect customers after complaints of high prices and poor services offered by the testing firms.
His letter to Mr Coscelli said: "I know that for too many people the cost of PCR testing can act as a barrier, especially for families who want to travel together.
"We have all experienced enormous disruption to our lives over this pandemic but it is not right if some families experience yet further disruption unnecessarily because of potentially unfair practices in the market for private travel tests."
Genomic sequencing data from PCR tests is harvested by the government to rapidly identify variants of concern, understand transmission and slow the spread, however the World Travel and Tourism Council has challenged why consumers should have to pay for this process.
There have also been images of uncollected packages spilling out of a drop-off point for a testing firm used by some of the nation's biggest airlines and tour operators.
The global tourism body believes if the government won't pick up the bill for PCR tests, it should at the very least replace the need for PCR Day two tests from green and amber countries with affordable and effective antigen tests, for fully vaccinated travellers.
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