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• Localised rapid steam generators: criteria for ETL inclusion

  This sub-technology category was removed from the ETL on 22nd March 2018.

  • Updated: 22 March 2018
• SIA character reference form: intention to refuse

  Use this form to provide a character reference for an SIA licence applicant or holder who falls into our 'intention to refuse' category.
• Specified generator: apply for an environmental permit

  The types of permit available, how much they cost and how to apply for your environmental permit.

  • Updated: 9 January 2026
• Specified generators: dispersion modelling assessment

  Guidance on how to do detailed air quality modelling for specified generators.

  • Updated: 27 March 2023
• Pay employers' PAYE

  How to pay PAYE and National Insurance for employers, including Construction Industry Scheme, student loan deductions, reference numbers, bank details, deadlines and payment booklets.
• Classifying leather for import and export

  Get help to classify articles of leather and other items in chapter 42 of the tariff for import and export.

  • Updated: 6 March 2023
• SIA character reference form: consider additional factors

  Use this form to provide a character reference for an SIA licence applicant or holder who falls into our 'consider additional factors' category.
• How to complete a bank and building society interest return

  Find out how to complete and submit a return using the HMRC spreadsheet or electronic flat text file (EFTF).

  • Updated: 27 February 2025
• Exhibit cover sheet for changing your name by deed poll: Form LOC027

  If you’re 18 or over, you can use this template cover sheet for each exhibit you must include when applying to enrol a deed poll to change your name.
• Classifying drones and aircraft parts for import and export

  Get help to classify drones and aircraft parts for import and export.

  • Updated: 7 August 2023