Mae'r ICO yn bodoli i'ch grymuso chi drwy gyfrwng gwybodaeth.

Read our guidance

Before you make a complaint, read our guidance about making a SAR to check if the organisation has followed the law.

Sometimes you might be unhappy with the outcome of your request, but the organisation has done everything they have to do.

Gwneud cwyn i'r ICO

Gallwch ddatrys llawer o broblemau'n uniongyrchol gyda'r sefydliad.

If it has been over one month since you made your request and you’ve not heard from the organisation, you should send them a follow up email or letter.

If you’ve already received a response to your SAR, but are unhappy for any reason, you should first complain to the organisation. We recommend that you do this by email, where possible.

If you think personal information is missing from the response, you should clearly list what other information you think they also have. This will help them review their records.

Remember to keep copies of any letters or emails about your complaint, or written records about any calls or meetings you’ve had, as evidence.

You could use the following complaint letter or email template as a guide, adding in the details of your own complaint:

[Eich cyfeiriad llawn]

[Rhif ffôn]

[Y dyddiad]

[Enw a chyfeiriad y sefydliad]
[Rhif cyfeirnod (os darperir o fewn yr ymateb cychwynnol)]

Annwyl [Syr neu Madam/enw’r person rydych wedi bod mewn cysylltiad ag ef]

Cwyn am hawl gwybodaeth

[Eich enw a'ch cyfeiriad llawn ac unrhyw fanylion eraill megis rhif y cyfrif i'ch helpu i'ch adnabod]

Rwy’n pryderu nad ydych wedi ymdrin â’m gwybodaeth bersonol i yn gywir.

[Rhowch fanylion eich cwyn, gan esbonio'n glir ac yn syml beth sydd wedi digwydd a, lle bo'n briodol, ei effaith arnoch chi.]

Rwy'n deall, cyn adrodd fy nghŵyn i Swyddfa'r Comisiynydd Gwybodaeth (ICO) y dylwn roi'r cyfle i chi ddelio ag ef.

Os hoffwn, pan fyddaf yn cael eich ymateb, adrodd fy nghŵyn i'r ICO o hyd, byddaf yn rhoi copi ohono iddynt i'w ystyried.

Gallwch ddod o hyd i ganllawiau ar eich rhwymedigaethau o dan ddeddfwriaeth hawliau gwybodaeth ar wefan swyddfa'r Comisiynydd Gwybodaeth (www.cy.ico.org.uk) yn ogystal â gwybodaeth am eu pwerau rheoleiddio a'r camau y gallant eu cymryd.

Anfonwch ymateb llawn o fewn un mis calendr. Os na allwch ymateb o fewn yr amser hwnnw, dywedwch wrthyf pryd y byddwch yn gallu ymateb.

Os oes unrhyw beth yr hoffech ei drafod, cysylltwch â mi ar y rhif canlynol [Rhif ffôn].

Yn gywir

[Llofnod]

Gwneud cwyn i'r ICO

Once you have followed the steps above, you can make a complaint to us

Dylech godi eich cwynion gyda ni o fewn tri mis i'ch cyswllt ystyrlon diwethaf â'r sefydliad.

Remember to send us copies of all the key documents you have kept as evidence to support your complaint.

Ni allwn:

  • act as your representative; or
  • award compensation.

The ICO can punish an organisation for breaking the law, but we only use this power in the most serious cases. If we think the organisation has not responded to your request as they should’ve done, we can give them advice and ask them to solve the problem.

You can also seek to enforce your rights through the courts. If you decide to do this, we strongly advise you to seek independent legal advice first. We cannot help you with this process.