English

The English area of the Bitesize website is packed with activities and questions to help you prepare for the National Tests in English.

Skillswise aims to help adults improve their reading, writing and maths skills. It
is targeted at Level 1 of the adult Basic Skills Literacy & Numeracy
Curriculums for England, Wales and Northern Ireland.

An excellent, fun website covering reading skills and several different genres of writing:

English and Literacy

Some helpful reading comprehension practise can be completed through this website:

Every School

A little bit of everything in these last two websites from spelling games to writing tips:

crickweb

topmarks