Just been down to my local B&Q where I found that they were selling 1 piece rigid plastic cloches, about 1m long with vents at each end and with 4 metal pegs to hold into the ground for £7.99 each. They also stack one inside another another. They looked so good, I bought 3.
I saw them in there & thought they looked good & nearly bought some too but OH has bought me a similar one off eBay which is very smart & currently sheltering lettuce seedlings.
Shows how things have moved on - only 2 years ago I went to our local B&Q at about this time of year & asked for cloches & they didn't know what I was talking about. Eventually found someone who did & she found me 2 things which look like umbrellas - I bought them but they were the only type they did - now they do several kinds. Growing your own is getting much more popular.