EEF concluded ‘no evidence’ that TSL had an impact on learning - yet picked them as a provider...

EEF's conducted research on the effectiveness of tuition from Third Space Learning in 2016 and concluded:

"Key conclusions 1. The impact evaluation found no evidence that the intervention had an impact on Key Stage 2 maths, compared with ‘business as usual’ teaching and support in Year 6."

How did the management of the NTP select them as a quality tutoring provider? 

read more here:

https://educationendowmentfoundation.org.uk/public/files/Projects/Evaluation_Reports/Affordable_Maths.pdf