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Same Day Dispatch*

Highly Rated
Express Shipping

Express Delivery*

Free Delivery

30% OFF First Order*

Same Day Dispatch

Same Day Dispatch*

Volume Discounts

Online Volume Discounts

Royal Mail 2025 Price Increases

As part of Royal Mail's price changes effective 7th April 2025, here's everything you need to know to ensure your parcels are correctly sized, weighed, and sent on the right service.

What Royal Mail Services Have Been Affected?

The following services were updated from 7th April 2025:

Domestic: 1st and 2nd Class Letters, Large Letters and Parcels, Royal Mail Special Delivery Guaranteed, Royal Mail Signed For, Royal Mail Tracked.

International: Royal Mail International Tracked, International Tracked & Signed, International Tracked/Tracked & Signed Heavier, International Signed, International Untracked (Standard), International Economy.

Below is a guide to help you identify your package across weight, dimensions, and delivery service — with 2024 prices compared against 2025.

Type Weight 1st Class 1st Class Signed For 2nd Class 2nd Class Signed For
Standard Letter Any 2024: £1.65
2025: £1.70
(3% increase) 		2024: £3.35
2025: £3.60
(7% increase) 		2024: 85p
2025: 87p
(2% increase) 		2024: £2.55
2025: £2.77
(9% increase)
Large Letter Up to 100g 2024: £2.50
2025: £3.05
(22% increase) 		2024: £4.30
2025: £5.05
(17% increase) 		2024: £1.55
2025: £1.55
(no change) 		2024: £3.20
2025: £3.45
(8% increase)
Type Weight Tracked 24 Tracked 48
Medium Parcel Up to 2kg 2024: £5.99
2025: £6.05
(1% increase) 		2024: £5.15
2025: £5.15
(no change)
Medium Parcel Up to 10kg 2024: £7.69
2025: £7.90
(3% increase) 		2024: £6.65
2025: £6.80
(2% increase)
Medium Parcel Up to 20kg 2024: £12.19
2025: £12.60
(3% increase) 		2024: £10.55
2025: £10.80
(2% increase)

Full Guide to Royal Mail Postage Rates and Envelope Sizes

Understanding postage rates and envelope requirements can be challenging — especially when you need to ensure your mail stays within Royal Mail's specified size and weight limits. Whether you're planning a bulk mailing or simply sending documents cost-effectively, knowing which envelope size meets the postage criteria is essential.

Royal Mail Postage Rates and Envelope Sizes — Full Guide

Everything you need to know about matching envelope sizes to Royal Mail postage categories, weight limits, and cost-effective sending.

Read the Full Guide
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Customer Feedback

What Our Customers Say

See why we’re trusted as by thousands of UK businesses for packaging and envelopes through our customer reviews.
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Envelope Printing Customer

Branded envelopes that felt event-ready

We needed branded envelopes for a client event and they looked exactly right. The team were helpful from start to finish and made sure everything moved quickly so we could meet our deadline. A really smooth experience for printed envelopes.

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Envelope Customer

Quick fix after an order issue

My order arrived with a problem, but after I emailed the team I received a quick response and the issue was sorted straight away. It was handled professionally and made me feel confident about ordering again.

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First Time Customer

Fast support when delivery went wrong

There was an issue with the courier delivering to my address, but the team dealt with it quickly and kept things moving. A replacement was arranged and the previous order was refunded without any fuss. It gave me a good first impression and I would order again.

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Wholesale+ Member

Reliable support for regular orders

The courier caused a problem, but Jess and Kelly were quick to help and did everything they could to sort it. They also looked at the products I order regularly and helped make future orders easier. Good value, good quality and service that feels genuinely useful.

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Envelope Printing Customer

Easy custom printed envelope order

Ordering custom printed envelopes was straightforward from the start. James answered my questions clearly, the order arrived when expected and the finished envelopes were great quality. I would be happy to use the service again.

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Wholesale+ Member

Helpful and easy to deal with

A very straightforward company to buy from. The team were helpful, clear with communication and easy to deal with, which makes a big difference when ordering packaging regularly.

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Sample Customer

Helpful advice before ordering

The team helped point me towards the right product before I placed my order. It made the decision much easier and gave me confidence that I was choosing the right packaging for what I needed.

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Packaging Customer

Useful support for flat pack cartons

Useful support for flat pack cartons

Who We Are

Postal Packaging started the way most good businesses do. A clear gap in the market, a small but determined team, and a lot of hard work. Founded by four women with years of experience in the packaging and envelope industry, we began selling from home and grew into a full warehouse operation in Cardiff, Wales. Today we supply businesses of every size across the UK and beyond, from independent retailers and ecommerce startups to large-scale fulfilment operations.

We stock everything you'd expect from an envelope and packaging supplier, and quite a bit you might not. Business envelopes, coloured and greeting card envelopes, padded mailers, board backed envelopes, cardboard boxes and eco-friendly alternatives, all available to buy online with competitive pricing and volume discounts of up to 40%. And if you're not sure what you need, that's fine too. Helping customers find the right solution is part of the job, and it's one of the parts we genuinely enjoy.

We care about getting it right on every front. Recycled and compostable options sit alongside our standard range because sustainability should be an easy choice, not an awkward one. For businesses buying regularly, our Wholesale+ service brings exclusive pricing and 30-day credit terms to the table, and same day dispatch means we move when it matters.

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029 2271 0914
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