To become an Amazon seller in England, you will need to follow these steps:

1. Register for an Amazon Seller Account: To get started, you will need to register for an Amazon seller account. You can do this by going to Amazon's Seller Central website and following the registration process.

2. Decide what to sell: You will need to determine what products you want to sell on Amazon. Research the market demand, competition, and pricing of the products you're interested in selling.

3. Source your products: Once you've identified the products you want to sell, you will need to source them. You can source products from wholesalers, manufacturers, or by creating your own products.

4. List your products on Amazon: You will need to create product listings for each of the items you want to sell. Make sure to include clear, high-quality images and detailed descriptions of your products.

5. Fulfil your orders: When customers place orders, you will need to fulfil them promptly. You can do this by handling the shipping and handling yourself or by using Amazon's fulfilment services.

6. Manage your inventory: It's essential to keep track of your inventory levels and restock your products when necessary.

7. Provide excellent customer service: Customer service is crucial to building a successful business on Amazon. Make sure to respond promptly to customer inquiries, resolve any issues that arise, and strive to exceed customer expectations.

8. Continuously optimize your sales: To be successful on Amazon, you will need to continuously optimize your sales by monitoring your performance metrics, adjusting your pricing and product selection, and adapting to changing market conditions.

Becoming an Amazon seller in England requires hard work, dedication, and a willingness to learn. By following these steps and staying committed to providing excellent customer service, you can build a successful business on Amazon.