SEO pricing across the UK spreads wildly because "SEO" can mean anything from installing a WordPress plugin to rebuilding an entire national content and link strategy.
For most local and regional UK businesses, realistic ongoing investment sits between £450 and £1,500 per month depending on how crowded your market is.
Red flags in cheap SEO retainers
Watch out for guaranteed "page one in 14 days" promises, outsourced directory blasts that harm domain trust, or vague monthly PDF reports boasting about impressions on brand terms you already own.
You should know precisely which commercial pages were improved, which search terms are climbing, and how many phone calls or form enquiries arrived.