As I understand it there are 2 aspects – Divorce and Financial Settlement.
To know what a fair split of assets is and to reach a financial settlement divorcing parties need to know what the assets of the marriage are, and what each asset is worth.
Look at a Form E. A long document in which each party sets out their assets, income, and financial needs. You can see in it the assets that are taken into consideration upon divorce and financial settlement, for example property (the former marital home), pensions, stocks and shares etc. It also lists the documents needed that show the value of assets for example CETVs (cash equivalent transfer values of pensions - which can be requested from pension providers).
To find out what some assets are worth an independent expert can be used. Property can be valued by an expert - estate agents, pensions by CETV and / or a pension on divorce expert (PODE) report and so on. It is important to decide what needs a valuation by an independent expert and factor in the costs of these.
Pensions can be very valuable – equivalent or more than the value of the former martial home in some cases. Divorcing parties might hold different types of pensions (not like-for-like, so difficult to compare without an expert). Circumstances might be complex for example an age difference or pensions in payment. One party may have stayed at home to look after children.
@AnnaMagnani and @silentpool made some useful comment on this in this thread
www.mumsnet.com/talk/divorce_separation/4664756-what-do-i-need-to-do-about-our-pensions?reply=121093079
When splitting the assets of a marriage…
www.legislation.gov.uk/ukpga/1973/18/section/25 applies
The income, earning capacity, property, and other financial resource which each of the parties to the marriage has or is likely to have in the foreseeable future. As I understand it, first consideration is given to the welfare (while a minor) of any child of the family who has not yet attained the age of eighteen. The needs of each divorcing party are taken into account and as I understand it 50 / 50 is the starting point – so unequal shares based on circumstances and needs is possible, for example 60 / 40. Settlements are meant to be fair and reasonable in line with Section 25.
These offer a free advice session about pensions on divorce and separation www.moneyhelper.org.uk/en/family-and-care/divorce-and-separation/divorce-or-dissolution-how-we-can-help-with-your-pension
Free advice line (busy so keep trying) rightsofwomen.org.uk
Guides on divorce and financial settlement
www.advicenow.org.uk/guides/how-apply-financial-order-without-help-lawyer
Pensions on divorce
www.sharingpensions.co.uk/penaudit3.htm
www.mediateuk.co.uk/the-ultimate-guide-to-pensions-on-divorce/
www.nuffieldfoundation.org/news/new-good-practice-guide-addresses-shortfall-in-understanding-of-how-to-treat-pensions-on-divorce
Valuation of pensions – pensions on divorce expert report
www.collinspensionactuaries.co.uk no relation – useful website
www.collinspensionactuaries.co.uk/pension-data-collection/ templates for information required
Hope this is helpful. Caveat – this is not my profession.
Legal advice should be sought.
This link gives you an indication of hourly rate for solicitors
www.gov.uk/guidance/solicitors-guideline-hourly-rates
Some organisations offer free advice from solicitors and barristers rightsofwomen.org.uk/get-advice/ On their FAQs page…”Our Legal Officers and Volunteer legal advisors are all solicitors and barristers”.
Some family solicitors offer an in initial free consultation and some a fixed fee rather than hourly.
Some barristers can be directly instructed e.g., via Clerksroom Direct