Hi louise and welcome to the forum
The majority of your debts are with Barclays, and you also have a substantial amount of equity in your property, so I do not feel that an IVA is the appropriate solution for you - and I think that Barclays would agree with this.
I suggest that you advise Barclays of your exact financial position - ie provide them with a summary of your income and expenditure and see if you can agree a reduced payment term with them. Also ask them if they will freeze the interest. They might suggest a consolidation loan for you, which will give you the benefit of a fixed term repayment probably at a lower rate than you are paying now. If you decide to go down this route, make sure that you do not incur any further credit along the way and be disciplined to get the debt repaid as soon as you can. You will also need perhaps to renegotiate payment terms with Abbey, depending upon the advice that Barclays give you.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk