Cash Isa risk

I'd agree with Masonic regarding the risk profile alternatives. 
But, if you want, you can get better than Shawbrooks 1.1% rate AND FSCS cover.
Gatehouse Bank have a 1.3% 5 year fixed ISA 'expected profit' rate ac. Note penalties for early access, very similar to Shawbrook.
UK Ethical savings accounts at competitive rates | Gatehouse Bank plc

And regarding possibly losing anything over £85k  - you've done the right thing asking....DO NOT even THINK about it when there is guaranteed alternatives. 
 

Sidwalesuk said:

A newbie question about a cash ISA - I have a 5 yr guaranteed shawbrook cash Isa standing at £85,000 paying 3x more than any product out there and just wondering would you risk putting more into it for the next 3 yrs?.

I would very much doubt you will be able to add any new money to it . These fixed rate savings account are usually only available for a short period . Often once you open them you have only 14 days to add new money .

jimjames said:

cricidmuslibale said:

I don't think it's a risk at all in this instance. If you are able to put more money into this cash ISA, i.e. the terms and conditions allow this, then, with it paying 3x more than any other cash ISA currently and interest rates likely to remain very low for quite some time yet, I would definitely put more money into it if I were you!

As per above I certainly wouldn't risk more than £85k with a smaller bank. I'm not sure how you think it is no risk at all, there is certainly a risk there with going above the FSCS limit, it might be small but there is a risk.

OP - you might want to also look at options for investing some of it if you have that much cash unless there are specific reasons for having so much available.

Unfortunately when I posted my reply to the OP I didn't spot the crucial detail of already having £85k in the Cash ISA. I would not have given the reply I did had I done so. Thus I'm going to delete my post above if possible.