BLM20165 | Defining long funding leases: basic definition: when to seek advice
From HM Revenue & Customs · Business Leasing Manual
If in doubt as to whether a transaction should be accounted for ‘as a lease’, seek advice from your advisory accountant.
You should seek advice from BAI if you come across arrangements under which plant or machinery is made available by one party to another party where all the following conditions are met:
the transaction is not accounted for as a lease
the provider claims capital allowances
the arrangement is not a PFI contract
the expenditure on plant or machinery exceeds £1m in any year
the arrangement is not the short term hire of the asset
This means that you will need to seek advice if you come across an arrangement between private bodies that is accounted for as a service concession under UK GAAP - see BLM20150. Other arrangements may also meet these criteria.