Advice on late payments affect on Husbands credit rating

Piglet36

Checked my credit report and my late payments are like this very shop direct which only has £538 on it
1 02100000100 and year before that all 0000000000

then just late payment on my barclaycard.
all the rest are 00000000

Should I pay the shop direct off now before the equity is released? or when equity is released with everything else?
all my debits are settled.

Would this help my husband sole mortgage application?
He doesn't want to worry me with the whole process due to me being seriously ill until recently. we should have a month - month 1/2 between our property completing and new property being ready for the mortgage to be drawn down.

I looked at the lending criteria of leeds building society and the suggest that
• No arrears on any current or previous forms of credit in the last 12 months, where the cumulative amount overdue exceeds one monthly payment.
• No arrears on any current or previous forms of credit in the last 3 years, where the cumulative amount overdue exceeds two monthly payments.

I am confused about those two bullet points....please could some one explain it to me?

thank you