Dear HM Revenue and Customs,
Please can you provide a complete list of all mainframe systems considered legacy (virtualised or not) that are still in use by HMRC?
I require a brief overview so this request should not take too long; a spreadsheet with the following headings would be handy:
Make and Model:
Application used for:
An example of the level of detail:
Make and Model: VAX 7000
Supplier: DEC (digital equipment corporation)
Languages used: COBOL, DCS, Custom C
Operating system: OpenVMS
Used for: Calculating VAT returns
Where you are unsure of the number of languages used on the system, just the key ones will be sufficient e.g. the batch processing language and main language e.g. COBOL.
Our ref: FOI2019/00392
Dear Cinta Ku,
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