To be fair to Dr Andy Bannister, he may not know how bad this argument of appealing to the number of NT manuscripts is. Sadly, there are so many Christian apologists repeating this suggestion the numer of NT manuscripts correlates with the reliability of the New Testament. I've clipped Dr Bart Ehrman to address this common claim in evangelical Christian apologetics.
If the video does not play, it has also bee uploaded here and here.
A Muslim's Thoughts on Solas CPC's + Other Christian Campagins Against Same Sex Marriage in the UK
Did Ignatius Teach the Trinity?
Thoughts on the Hamza Myatt, Liz Mooney, Chris Claus and Jonathan McLatchie Exchanges