Application for £8 sim rejected twice despite excellent credit

[Sibelius70]

I ordered an £8/month sim and was rejected twice. I couldn’t understand and  worried that something was wrong with credit files. I checked and  found these scores:

experian 999/999

equifax 943/1000

transunion 665/710

I have a long credit history and have not once been late with a payment. I also have an excellent salary and no debt, except for a small remaining mortgage. This doesn’t make any sense. 

Can anyone explain why this might have happened?

[Enlli]

Be interesting to see if things change on Vodafone capacity wise when 3G is turned off by the end of March

[Oxonian]

@Sibelius70 

My personal observations when I visit Oxford are that :-

- EE is poor.

- Vodaphone is good.

- O2 are very good but with a horrible blackspot around the Magdalen Bridge, Cowley Road, Iffley Road and St Clements area. 

- Three are very good. 

One thing to watch for when using MVNOs is what they offer and do not offer when compared to the network they operate on. For example, data is generally faster on Tesco than on O2 PAYG because Tesco make 5G available to PAYG customers but O2 do not.