Can I wait until April to carry out assessments?

Companies House guidance on the impact of coronavirus on their services can be found at: https://www.gov.uk/guidance/coronavirus-guidance-for-companies-house-customers-employees-and-suppliers

This flexibility offered by Companies House could be a useful short-term help to businesses that are struggling to deal with the impact of the Covid-19 outbreak, but be sure to take action in advance of your filing deadline.

The Charity commission has issued the following guidance

https://www.gov.uk/guidance/coronavirus-covid-19-guidance-for-the-charity-sector

Follow up to date UK Government advice. This can be found at: https://www.gov.uk/government/publications/guidance-to-employers-and-businesses-about-covid-19/guidance-for-employers-and-businesses-on-coronavirus-covid-19

For best practice and more detailed information; consult the HSE’s website at https://www.hse.gov.uk/news/coronavirus.htm

Failing to follow the guidance is likely to be regarded as failing to take all reasonably practicable steps.

It is. If you assess a risk and identify a control measure then fail to deploy it, then you are breaching your legal duties under HASWA and potentially committing a criminal offence. So if you decide for example that N95 respirators have to be used by everyone, you have a duty to provide them.

So the short answer is yes.

Physical bundles may not be regarded as safe for public health and there are obvious difficulties in providing them with the current restrictions in place. Electronic bundles should be provided in PDF format, preferably paginated, indexed and bookmarked. The bundles should only contain documents and authorities that are essential to the issues required to be decided at the remote hearing and should be filed with the court by email.