The only thing one can recommend about buying a tent, is to buy the very best you can afford.
Vango, The North Face and other's manufacture high quality tents, but a good tent is only as good as it's construction and materials used.
Do your research, and if prices first appear steep for the tent of your dreams, save up for it.
Buying the very best quality tent will result in a piece of equipment that can outlast you.
My relative still has a tent they purchased way back in 1962, and the receipt is still in their posesion , £16.80.
That was an awful lot of money back then, but the tent has survived trips to Australia, New Guinea, and Norway, and still gets regular use, i believe it was used on a trip to the Paps of Jura last year.
Unless you invest in a very high quality tent, it's doubtful anything sold in Cotswolds or similar shop, will last over 50yrs of annual use.
Save your money carefully, and buy a top specification tent, in the longterm, it will pay for itself.