You asked

Please could you provide me with the figures for internet advertising in the UK for 2016.

We said

Thank you for your request.

Unfortunately, we do not hold the information required to fulfil your request.

The £653 million figure spent in 2004 you have quoted above appears to come from the following link;

http://www.e-comlaw.com/e-commerce-law-and-policy/article_template.asp?ID=917&Search=Yes&txtsearch=adverts

Although we are unable to provide the information you need, you may find the following link of interest;

http://ec.europa.eu/eurostat/statistics-explained/index.php/Internet_advertising_of_businesses_-_statistics_on_usage_of_ads

This release from Eurostat is about the proportion of businesses across Europe who have posted paid adverts. This relates to data collected on our 2015 E-Commerce survey. Table sixteen of the 2015 release may also be of some interest to you, and can be found in the following link;

https://www.ons.gov.uk/businessindustryandtrade/itandinternetindustry/datasets/ictactivityofukbusinessesecommerceandictactivity