Small but relevant personal experience. Wife and I owned an asset which could, via planning permission have changed value by a factor of 100.
Sought advice which was get the children's names on the asset immediately and pay the tax now if appropriate -( but it wasn't, £60K annual personal allowance for capital gains tax applies). Children now own asset and will pay their own cap gains, if appropriate, .......once Planning permission granted and the asset value rockets - they could use it and pay nothing or sell it and pay the tax.
Very wise to seek advice (maybe £200 max), as getting it wrong will cost either now or in the long-run. akes very much more sense if the current values are high. I would go to a good local solicitor who employs a tax specialist (as we did). Interview them and see if they feel 'right', if not go elsewhere.
Playing dumb but knowing some directly relevant law helps you choose.
If its cash you are looking to pass on, then its probably a trust and a solicitor is wise, title deeds the same, one or other may need linking to a will which it sounds you might be considering.
If an accountant is needed, Your solicitor will advise you and probably recommend one, if he uses one as part of his advice then the solicitor bears the professional responsibility. It might be wise to check the solicitor has professional negligence insurance - just in case and don't be afraid to ask.
Trust very, very, carefully.
Your accountant must be unable to advise - why would he not want a fee ?