This waa announced yesterday and so there isn't a lot of information yet, but it launches on Monday and I can't see anything that prevents us applying

[From the .gov page:]
Apply for a coronavirus Bounce Back Loan
This scheme will help small and medium-sized businesses affected by coronavirus (COVID-19) to apply for loans of up to £50,000.
Published 27 April 2020
From:
Department for Business, Energy & Industrial Strategy
Contents
Eligibility
How to apply
This scheme is not available yet. It will launch on 4 May 2020.
The Bounce Back Loan scheme will help small and medium-sized businesses to borrow between £2,000 and £50,000.
The government will guarantee 100% of the loan and there won’t be any fees or interest to pay for the first 12 months.
Loan terms will be up to 6 years. No repayments will be due during the first 12 months. The government will work with lenders to agree a low rate of interest for the remaining period of the loan.
The scheme will be delivered through a network of accredited lenders.
Eligibility
You can apply for a loan if your business:
is based in the UK
has been negatively affected by coronavirus
was not an ‘undertaking in difficulty’ on 31 December 2019
Who cannot apply
The following businesses are not eligible to apply:
banks, insurers and reinsurers (but not insurance brokers)
public-sector bodies
further-education establishments, if they are grant-funded
state-funded primary and secondary schools
If you’re already claiming funding
You cannot apply if you’re already claiming under the Coronavirus Business Interruption Loan Scheme (CBILS).
If you’ve already received a loan of up to £50,000 under CBILS and would like to transfer it into the Bounce Back Loan scheme, you can arrange this with your lender until 4 November 2020.
How to apply
The Bounce Back Loan scheme will launch on 4 May 2020.
More information about the scheme will be published shortly.
Published 27 April 2020
[End quote]
I poked about a bit and it seems likely that the loan can be for up to 25% of turnover or average turnover - I suppose they'll use the same time period as they do for the self-employed grant but this is just guesswork. It opens at 9am for anybody who wants to have a go

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