Hi Sedo
Blackmore is our favourite CC site. It was the first site we went to when we first started caravanning, and it has remained our firm favourite. We have actually booked for the 12 days Easter Bank Holiday and Royal Wedding weekend and can't wait !!!!
With regards to walking there are many walking routes that you can take up into the Malvern Hills. Having small children we actually haven't managed to do this, but alot of people stay at the site purely to explore the Malvern Hills. As you come out of the campsite and turn right this takes you to a a small village which is about a 20 minute walk called Hanley Swan. The village has a small post office/convenience store, a pub and butchers. It also has a fantastic little caravan shop !!! If you go left out of the campsite this takes you into a little village called Barnards Green which has a small parade of shops, fish and chip shop and a co-op for all your essentials. You could definitely cycle to both of the villages, but again not being a cyclist I probably cannot be of much use to you there. The wardens are lovely, always helpful and nothing is too much trouble. The toilet blocks are always clean, no matter how busy it gets and are always of a high standard. I would say that the site can get quite busy on the bank holiday weekends, and school holiday times and there can be alot of children about. However, the site still seems peaceful and is lovely to walk around for a nice evening stroll. I do not know if you have a dog, but it has a small dog walk too.
Any questions, then please feel free to ask.
Sorry, I haven't been able to help specifically with regards to the walking and cycling at the site, but I am sure you will not be disappointed.