ShipperHQ - Alternatives

Hi all! I'm wondering if I could please ask some advice?

I currently manage a fairly small WooCommerce based site, and use ShipperHQ on the essentials plan - fairly low cost and suits us, as our requirements are quite basic, and shipping volumes are low.

We've now been contacted by ShippeHQ to say that they no longer offer the essentials plan and that we need to move to the Standard plan, which is a massive price hike for us as a small business. As a point aside, I can see that the essentials plan is still listed on their site, so I'm querying their statement.

I'm now looking around for alternatives, but everything seems to be geared towards specific carriers like FedEx, etc. We're UK based and used DPD or Royal Mail for our shipping and I'm wondering if anyone would be able to make a recommendation, please?

Many thanks!