What order would you pay these debts in?

EasternB

Any help or advice would be appreciated. 

I have three credit cards. 

HSBC - £1,874.60 (£6,000 credit limit)

21.9%

Halifax - £2,790.38 (£3,400 credit limit)

0% until 05/07/2022

Then 26.66%

Barclaycard - £5,989.18 (£7,400 credit limit)

£3,881.07 - 0% until 01/07/22 then 18.68%

£366.33 - 0% until 01/08/22 then 18.68%

£1,752.78 - 0.5566%

£1,800 of the Barclaycard is stuff I bought on my mums behalf, and she pays £300 off of that a month - which covers the minimum payment and then some for the next six months. 

Then, taking into account minimum payments for the other two, I can afford an additional £450.

I currently only have 0% balance transfer offers on Barclaycard (for £670) and Halifax (£371). 

I have a £450 payment to make for May and I’m not sure which credit card to focus on. 

TheAble

It's much of a muchness really. Since the HSBC is accruing interest right now I'd probably focus on getting that put to bed, then move to the Halifax.

enthusiasticsaver

I would focus on HSBC too.